Wrinkles and Aging Skin

Laser Treatment, Botox®, Fillers and Skin Rejuvenation

Skin rejuvenation is an increasingly popular subject for researchers, dermatologists, and patients. The advent of numerous methods and techniques for treating fine lines and wrinkles has brought facial rejuvenation into the mainstream. In 2007 alone over 11.7 million cosmetic procedures were performed in the United States , and four of the top five nonsurgical procedures are targeted at restoring the skin’s youthful appearance. Given the huge demand for treating wrinkles and aging skin many products and technologies are marketed to prospective patients, some which are based in science, and others which are not. It is vital to understand the science behind these procedures and products before making any decision on skin rejuvenation.

Skin Rejuvenation, Restylane, Fraxel


What Causes Skin Aging?

Before we discuss treatment options, it is first important to understand what is happening to our skin as it ages. Most of what concerns us about our aging skin is caused by the sun[1][2][3]. 90% of the skin rejuvenation I perform in my practice is targeted at damage caused by the sun. What are these conditions? They are:

The Five Signs of Sun Damage

  • Fine Lines and Wrinkles
  • Enlarged Pores
  • Sagging Skin
  • Brown Spots (Freckles & Solar Lentigines)
  • Spider Veins
Whenever I tell my patients most of their aged skin is the result not of chronological aging, but from the sun, inevitably I hear “but I’m NEVER in the sun!” To hear my patients tell it you would think they all live in an elaborate tunnel system beneath Philadelphia. The truth, however, is that we ALL are exposed to sunlight every day. It may be very short exposure (i.e. walking to and from your car on the way to work) but over the course of our lives that incidental exposure adds up. Unless we are using sun screen everyday, 365 days a year, rain or shine, that exposure is doing damage to our skin. Skin that is protected from the sun (for example the skin on our bottom) does not suffer from many of the problems we associate with “old skin”.  Age spots or enlarged pores are not found typically on inner-thighs. Why? No sun exposure. With the passage of time we do see a loss of adipose, the fatty tissue in our skin, but this is not what usually concerns patients seeking skin rejuvenation. They are concerned with sun-damaged skin.

How the Sun Damages Skin

The skin is made up of an extra-cellular matrix (collagen-elastin-glycosaminoglycans). Collagen is the skin’s major building-block, elastin gives it its flexibility (“elastic”). The sun damages these proteins by triggering our skin’s DNA to act in abnormal ways.[4][5][6] The sun’s damaging rays tell our skin’s DNA to produce degraded collagen and elastin proteins[7]. These degraded cells are less elastic and have a less-youthful appearance than cells which are not exposed to the sun[8].

Free Radicals

Free radicals are an important factor in skin aging. They are caused by sun exposure. Free radicals are reactive atoms that do damage to our collagen and cause inflammation. They are negatively charged oxygen molecules. All oxygen-breathing organisms create free radicals and our bodies have a natural defense against them. We produce SODs (superoxide dismutase) to neutralize these free radicals. However over time, after years of cumulative sun exposure, we do damage to our body’s natural ability to fend off these free radicals. In essence “our shields are down”, we are unable to prevent the damage to our skin[9]. Often I will have patients complain that their skin has suddenly become much worse in just the last year. The reason is that the sun is now directly damaging their skin and their body is unable to protect the skin.

Smoking Smoking is a significant way to expose our skin to free radical damage and increase the wrinkling on our face[10][11][12]. Smoking can significantly increase the aged look of skin, particularly around the mouth, as free radical exposure from cigarettes injury the skin in a way similar to the free radical damage of the sun.


Preventing Aging Skin

Prevention of sun damage is key in protecting our skin from further harm[13], even after we have skin rejuvenation therapies. Sun avoidance is one way to prevent sun damage, however this can be difficult, especially for people who work in the sun. The best way to prevent sun damage is to WEAR SUNSCREEN. Be sure that the sunscreen you buy contains both UVA and UVB protection in it as sunlight has both. UVB causes skin cancer and UVA is the most significant cause of wrinkled skin. Another thing you can use to protect yourself while driving (which incidentally is the place most of us receive the majority of our sun exposure) is clear window film which blocks UVA.


Skin Rejuvenation Treatment

The damage done to our skin from sun exposure can be treated. The last decade has seen an explosion of breakthroughs in lasers, dermal fillers, IPL and radiofrequency devices, topicals and other methods. Below I will attempt to review each and provide some understanding about the options now on the market. The first aspect of treatment really comes with prevention (see above). It’s critical to wear high SPF sunscreen with both UVA and UVB protection. If you do you will see a little benefit just from this, the body will start to repair itself. From protection we go up the ladder of treatment aggressiveness, and I usually start with topicals.

Topicals

Yes, I will mention sunscreen for a third time just to drive the point home further. It’s that important. In addition to sunscreen though, topicals are a great place to begin the skin rejuvenation process. It’s easy, generally inexpensive, and can make a dent in nature’s years of harm. The first thing is to understand what works and what doesn’t. Most patients I see have a medicine cabinet full of products that either don’t work or that they have simply given up on. You must first buy products recommended for you specifically by your dermatologist, then follow through and use them religiously. It’s important to follow the recommended regimen of your dermatologist if you expect the products to have the desired effect. The only topical treatment with FDA approval for treating wrinkles are retinoids, such as Retin-A[14][15]. Tretinoin is effective topically at reducing and improving the look and texture of fine lines and wrinkles. Moisturizing the skin can also be helpful as dry skin can often look more wrinkled than skin that is effectively moisturized. Removing dead skin cells, which is a good place for make-up to get stuck and increase the prominence of wrinkles, is also helpful topically. This can be done a number of ways, however a good topical solution is a glycolic or citric acid peel (see chemical peels). Earlier we mentioned free radicals and the havoc they can wreak on our skin. A great way to battle these topically is with antioxidants. Antioxidants protect our skin from the inflammation caused by free radicals, and they are a good part of any topical regimen.

Chemical Peels

Chemical peels come in a variety of strengths and formulations. Their name signals their mechanism of action, which is to remove skin cells with a chemical solution to produce a desired result. There are chemical peels which can remove the entire surface of skin, similar to a complete skin resurfacing via laser surgery. These deep chemical peels, in my opinion, have largely been replaced by lasers which have more predictable outcomes and can be better controlled. Such peels may include Phenol peels, which have significant risks such as hyperpigmentation (skin darkening) and cardiac risks. Popular chemical peels which are used commonly in my practice are the Alpha Hydroxy Acid (AHA) peels and Glycolic Acid peels[16][17][18]. These peels may be used in low concentrations, which can be used for in-home products, and in higher concentrations in clinical settings. These are great for acne treatment and for mild skin rejuvenation. They are effective at removing dead skin cells and improve some unevenness in pigmentation.  Trichloroacetic acid peels (TCA peels) are also highly popular. Generally applied in a clinical setting, these peels will provide some skin tightening and some reduction in brown spots and surface blemishes[19][20].

Microdermabrasion

Microdermabrasion refers to a class of devices which remove the stratum corneum, the skin’s superficial protective layer of dead skin cells. By removing this layer we are able to get topical products deeper into the skin[21]. I typically use microdermabrasion as a product delivery device in conjunction with topicals, rather than a stand-alone procedure.


Lasers


Laser rejuvenation is among the most popular methods available for treating fine lines and wrink les. There are a wide range of laser treatment options available today, some with really impressive results. There are non-ablative lasers (lasers which do not injure the skin’s surface), fractionated lasers (lasers which partially injure than skin’s surface) and ablative lasers (which may be used to remove the skin’s layers).

In my own practice I use two different types of visible light lasers in addition to infrared lasers for non-ablative treatment of photodamaged skin. These may be used to safely treat all five signs of sun-damaged skin[22][23][24]. Fractionated lasers are new lasers used for skin rejuvenation. These lasers use fiber lasers, which are also used for telecommunications in fiber-optic networks. They use a glass-fiber cylinder through which microscopic laser beams are transmitted and create small injuries to the surface of the skin. These microscopic injuries are distributed across the treatment area in a way which minimizes downtime but maximizes efficacy (think of a lawn that has been aerated). These can be very effective for wrinkles, scarring, and other indications as well[25][26]. Fully ablative lasers, such as CO2 laser resurfacing, was one of the first laser skin rejuvenation methods developed. Initially we used laser resurfacing to completely remove the surface of the skin, which often produced impressive results with a great deal of skin tightening. The trouble, however, with this method is the high risk of side effects and difficult wound care. By and large this is reserved for highly damaged skin in certain specific types of patients[27][28]. In general lasers are an extremely effective treatment option for skin rejuvenation, especially when used by highly-trained and experienced physicians with multiple lasers and a variety of treatment options at their disposal.

Radiofrequency

Radiofrequency rejuvenation is another energy-based treatment technique which aims radiofrequency energy into the skin to affect skin tightening and lifting of sagging skin. Most systems do this by stimulating the body’s natural healing response through delivery of heat/light to layers beneath the epidermis[29][30].

Intense Pulsed Light

Intense pulsed light (IPL) is another light-based method to remove brown spots and wrinkles associated with sun damage. A broad spectrum light source is used to target melanin or blood vessels in the treatment area. It can improve hyperpigmentation and skin tone. There is little to no downtime with IPL as it leaves the skin intact. There may be some redness or swelling at the treatment site afterward, however this is generally mild and will fade. Several treatments may be needed to obtain desired results[31].

Injectable Fillers

Injectable fillers are the most popular method of rejuvenating skin in the world. Of the 11.7 million cosmetic procedures performed in the US in 2007, the #1 and #2 procedures were injectables (Botox® and Hyaluronic Acid fillers, respectively)[32]. Injectables can be used to smooth out the surface of the skin, reducing fines lines and wrinkles around the face, or to immobilize muscles which exaggerate wrinkling around the face. The substances which comprise fillers differ. Some fillers are made of artificial substances, others are hyaluronic acid-based gels which aim to replace hyaluronic acid deficiencies in the skin. Collagen fillers have been popular for many years as well. The length of time the materials remain affective deepens on their materials and how long it takes the body to naturally dispose of them. Generally fillers last for up to a year.


Botox®

Botox is the highly popular product made by Allergan which works well to address dynamic lines, lines made by muscle movement. It’s important to note that wrinkles are not “made” by moving our facial muscles. Notice children, they move their faces all day long and they do not have wrinkles. The reason for this is their facial skin has yet to be damaged by the sun. Their skin is still healthy and can “bounce back” into place[33][34].

Botox works well on dynamic lines by preventing muscle movement. It is a protein produced by bacteria, clostridium botulinum. Initially it was used in ophthalmology for patients whose eyes went in opposing directions, thereby immobilizing the errant eye. Today it is widely used to treatment forehead lines, brow lines, and lines above the bridge of the nose[35][36]. Side effects from Botox may include excess immobilization of the face. Botox usually will last no more than four months, so side effects will wear off.

Surgery

Plastic surgery is the most invasive option for patients considering skin rejuvenation. It also produces significant results, particularly for sagging skin. Blepharoplasty can be used to treat sagging eye lids. The face lift can be used to tighten loose facial skin. Liposuction may also be used to remove fat below the chin (“double chin”). Generally these surgeries have risks and side effects similar to other surgeries.


Choosing a Treatment

It is very hard for a lay person to know which treatment is ideal for them. The best thing for anyone who is considering skin rejuvenation to do is to seek out an expert in skin, for example a cosmetic dermatologist, for a consultation. Don’t be afraid to get multiple consultations with different physicians. What you want is someone with access to a variety of treatment options at their disposal. If you see someone who only has one option for skin rejuvenation, they are going to steer you towards the device or option they have. It is always good to spend a little time with several providers, and then make a choice. Never rush into a decision. A little patience, research, and consultation will help you get the results you want.


Choosing a Physician

As mentioned in Choosing a Treatment, in my opinion it is critical to see a physician with experience in treating the skin, preferably a dermatologist. You want a physician with a variety of treatment choices, has treated many patients with similar concerns as you, and is directly supervising treatment. Ask question like:


  • What is your specialty?
  • Are you a board-certified physician? If so, in what?
  • Do you own your lasers?
  • Is this laser/treatment good for my skin-type?
  • What other treatments are available to me?
 

Cost Matrix

Cost is an important part of choosing a treatment course. Generally cost will be determined by where you live (demand-supply), which treatment(s) you are choosing, the office you are going to and a number of other variables. Your physician will usually discuss your cost options during your consultation. Find more about the specific costs of wrinkle treatment at The Patient's Guide to Wrinkles.
There is one very important thing to note about cost. There are no bargains in cosmetic medicine. This is a field where you truly will get what you pay for. Quality care will come at a premium. I have treated many patients who have gone out looking for the “best deal” only to greatly regret it when the treatment was ineffective or, in the worst cases, they were injured because of poor care.

External Resources

Patient's Guide to Wrinkles
Botox Cosmetic
Collagen Skin Care
U.S. Clinical Trials


[1] SMITH JG Jr, DAVIDSON EA, SAMS WM Jr, CLARK RD. Alterations in human dermal connective tissue with age and chronic sun damage. J Invest Dermatol. 1962 Oct;39:347-50.

[2] Uitto J. Collagen biosynthesis in human skin: a review with emphasis on scleroderma. Ann Clin Res 1971; 3:250-258

[3] Kligman AM, Zheng P, Lavker RM. The anatomy and pathogenesis of wrinkles. Br J Dermatol 1985; 113:37-42

[4] Uitto J, Olsen DR, Fazio MJ. Extracellular matrix of the skin: 50 years of progress, J Invest Dermatol 1989; 92:61S-77S.

[5] Uitto J, Fazio MJ, Olsen DR. Molecular mechanisms of cutaneous aging: age-associated connective tissue alterations in the dermis. J Am Acad Dermatol 1989; 21:614-622.

[6] Timpl R. Structure and biological activity of basement membrane proteins. Eur J Biochem 1989; 180:487-502.

[7] Ryynanen M, Knowlton RG, Parente MG, et al. Human type VII collagen: genetic linkage of the gene (COL7A1) on chromosome 3 to dominant dystrophic epidermolysis bullosa. Am J Hum Genet 1991; 49:797-803.

[8] Escoffier C, de Rigal J, Rochefort A, et al. Age-related mechanical properties of human skin: an in vivo study. J Invest Dermatol 1989; 93:353-357.

[9] Bernstein EF, Underhill CB, Hahn PJ, et al. Chronic sun exposure alters both the content and distribution of dermal glycosaminoglycans. Br J Dermatol 1996; 135:255-262

[10] Ernster VL, Grady D, Miike R, Black D, Selby J, Kerlikowske K. Facial wrinkling in men and women, by smoking status. Am J Public Health. 1995 Jan;85(1):78-82.

[11] Kadunce DP, Burr R, Gress R, Kanner R, Lyon JL, Zone JJ. Cigarette smoking: risk factor for premature facial wrinkling. Ann Intern Med. 1991 May 15;114(10):840-4.

[12] Yin L, Morita A, Tsuji T. Skin aging induced by ultraviolet exposure and tobacco smoking: evidence from epidemiological and molecular studies. Photodermatol Photoimmunol Photomed. 2001 Aug;17(4):178-83.

[13] Bell CD, Mazzone WF. Prevention of skin damage by sunlight. U S Armed Forces Med J. 1952 Aug;3(8):1225-32.

[14] Lundin A, Berne B, Michaelsson G. Topical retinoic acid treatment of photoaged skin: its effects on hyaluronan distribution in epidermis and on hyaluronan and retinoic acid in suction blister fluid. Acta Derm Venereol 1992; 72:423-427.

[15] Kligman AM, Dogadkina D, Lavker RM. Effects of topical tretinoin on non-sun-exposed skin of the elderly. J Am Acad Dermatol 1993; 29:25-33.

[16] Van Scott EJ, Yu RJ. Control of keratinization with alpha-hydroxy acids and related compounds, I:topical treatment of ichthyotic disorders. Arch Dermatol 1974; 110:586-590

[17] Ditre CM, Griffin TD, Murphy GF, et al. Effects of alpha-hydroxy acids on photoaged skin: a pilot clinical, histologic, and ultrastructural study. J Am Acad Dermatol 1996; 34:187-195.

[18] Bernstein EF, Underhill CB, Lakkakorpi J, et al. Citric acid increases viable epidermal thickness

[19] Brodland DG, Roenigk RK. Trichloroacetic acid chemexfoliation for extensive premalignant actinic damage of the face and scalp [published erratum appears in Mayo Clin Proc 1988; 63:1122]. Mayo Clin Proc 1988; 63:887-896.

[20] Lawrence N, Cox SE, Cockerell CJ, et al. A comparison of the efficacy and safety of Jessner’s solution and 35% trichloroacetic acid vs 5% fluorouracil in the treatment of widespread facial actinic keratoses. Arch Dermatol 1995; 131:176-181.

[21] Briden E, Jacobsen E, Johnson C. Combining superficial glycolic acid (alpha-hydroxy acid) peels with microdermabrasion to maximize treatment results and patient satisfaction. Cutis. 2007 Jan;79(1 Suppl Combining):13-6.

[22] Bernstein EF. The new generation, high-energy, 595nm, long pulse-duration pulsed-dye laser effectively removes spider veins of the lower extremity. Lasers Surg Med 2007; 39:218-224.

[23] Bernstein EF. The new generation, high-energy, 595nm, long pulse-duration pulsed-dye laser improves the appearance of photodamaged skin. Lasers Surg Med 2007; 39:157-163.

[24] Lowe NJ, Behr KL, Fitzpatrick R, Goldman M, Ruiz-Esparza J. Flash lamp pumped dye laser for rosacea-associated telangiectasia and erythema. J Dermatol Surg Oncol 1991; 17:522-525.

[25] Laubach HJ, Tannous Z, Anderson RR, Manstein D. Skin responses to fractional photothermolysis. Lasers Surg Med. 2006 Feb;38(2):142-9.

[26] Laubach H, Chan HH, Rius F, Anderson RR, Manstein D. Effects of skin temperature on lesion size in fractional photothermolysis. Lasers Surg Med. 2007 Jan;39(1):14-8.

[27] Fitzpatrick RE, Rostan EF, Marchell N. Collagen tightening induced by carbon dioxide laser versus erbium: YAG laser. Lasers Surg Med. 2000;27(5):395-403.

[28] Tanzi EL, Alster TS. Single-pass carbon dioxide versus multiple-pass Er:YAG laser skin resurfacing: a comparison of postoperative wound healing and side-effect rates. Dermatol Surg. 2003 Jan;29(1):80-4.

[29] Alster TS, Lupton JR. Nonablative cutaneous remodeling using radiofrequency devices. Clin Dermatol. 2007 Sep-Oct;25(5):487-91.

[30] Alexiades-Armenakas M. Rhytides, laxity, and photoaging treated with a combination of radiofrequency, diode laser, and pulsed light and assessed with a comprehensive grading scale. J Drugs Dermatol. 2006 Sep;5(8):731-8.

[31] Bjerring P, Christiansen K, Troilius A, Dierickx C. Facial photo rejuvenation using two different intense pulsed light (IPL) wavelength bands. Lasers Surg Med. 2004;34(2):120-6.

[32] American Society for Aesthetic Plastic Surgery, 2007 Survey

[33] Klein AW, Carruthers A, Fagien S, Lowe NJ. Comparisons among botulinum toxins: an evidence-based review. Plast Reconstr Surg. 2008 Jun;121(6):413e-422e.

[34] Matarasso SL. Comparison of botulinum toxin types A and B: a bilateral and double-blind randomized evaluation in the treatment of canthal rhytides. Dermatol Surg. 2003 Jan;29(1):7-13; discussion 13.

[35] Hankins CL, Strimling R, Rogers GS. Botulinum A toxin for glabellar wrinkles. Dose and response. ermatol Surg. 1998 Nov;24(11):1181-3.

[36] Lowe NJ, Yamauchi PS, Lask GP, Patnaik R, Moore D. Botulinum toxins types A and B for brow furrows: preliminary experiences with type B toxin dosing. J Cosmet Laser Ther. 2002 Mar;4(1):15-8.



Comments

Eric Bernstein
Eric Bernstein
Dermatologist
Bryn Mawr, PA
Article rating:
Your rating:
Closed collaboration
Only owners and authors may edit the knol
Version: 8
Versions
Last edited: Jun 16, 2009 11:34 AM.

Reviews

    Knol translations

    Activity for this knol

    This week:

    28pageviews

    Totals:

    847pageviews