Photoaging: what it is and how it shows on the face
Quick facts
- Definition
- Skin aging caused by accumulated exposure to solar radiation, added to natural aging.
- Main cause
- Ultraviolet radiation (UVA and UVB); visible light and infrared are also studied as contributors.
- Typical signs
- Spots, fine and deep wrinkles, rough texture, yellowish and thickened skin, small visible vessels and loss of elasticity.
- Where it appears
- Exposed areas: face, neck, chest and the backs of the hands.
- Relevance in facial harmonization
- Filler and toxin do not treat skin damage; the assessment separates what is volume, muscle and skin quality.
Photoaging is skin aging caused by accumulated exposure to solar radiation, added to natural aging, also called intrinsic or chronological aging. It explains much of the spots, rough texture and wrinkles that appear on the face, neck, chest and backs of the hands, and it is why two people of the same age can have such different skin. In facial harmonization, understanding photoaging helps separate what is a problem of volume or muscle from what is a problem of the skin itself.
How does the sun age the skin?
Ultraviolet radiation is the main cause. UVB acts more on the epidermis and is linked to sunburn and to changes in surface cells. UVA reaches deeper, into the dermis, and takes part in the breakdown of collagen and elastic fibers. Visible light and infrared are also studied as contributing factors, especially for spots.
In the dermis, repeated exposure activates enzymes that break down collagen and leads to the buildup of disorganized elastic material, called solar elastosis. The result is skin that loses firmness and elasticity, with altered texture and uneven color.
How to tell it from natural aging?
| Aspect | Natural aging | Photoaging |
|---|---|---|
| Where it appears | Across all the skin, including protected areas | Mainly in exposed areas |
| Texture | Thin, smooth and dry | Rough, thickened, sometimes yellowish |
| Color | Even, paler | Spots, melanoses and uneven tone |
| Wrinkles | Fine | Fine and deep, more marked |
| Vessels | Barely visible | Dilated small vessels (telangiectasias) |
A simple way to see the difference is to compare the skin of the face with that of an area that is always covered, such as the inner arm. Scales such as the Glogau scale and the Fitzpatrick skin type help record the degree of damage and the skin's sensitivity to the sun.
Why does it matter in facial harmonization?
Fillers restore volume and botulinum toxin reduces muscle contraction, but neither corrects spots, texture or elastosis. Without this separation, the patient may expect from a filler something it does not deliver. The assessment usually divides the concern into three layers: volume and support, muscle movement, which forms dynamic wrinkles, and skin quality, where fine static wrinkles and spots are found. Skin-directed options, such as skin boosters, collagen biostimulators and surface treatments, are used at the discretion of the qualified professional. The full context is in facial aging by layers.
How does it show up in assessment?
- Medical history: sun exposure at work and leisure, use of sunscreen, tanning and smoking, which worsens the picture.
- Examination under even light: spots, texture and small vessels show up better under frontal, diffuse light.
- Comparing areas: face, neck and chest against protected areas.
- Photographic record: standardized photos allow comparing the evolution of the skin throughout treatment.
Daily sun protection is part of the plan for every facial harmonization patient, because damage continues as long as exposure continues.
Also known as: extrinsic aging, dermatoheliosis, actinic aging, photoaging.
Frequently asked questions
What is the difference between natural aging and photoaging?
Natural aging leaves the skin thinner, drier and with fine wrinkles, but of even color. Photoaging, caused by the sun, adds spots, rough texture, thickened and yellowish skin, small visible vessels and more marked wrinkles, especially in exposed areas.
Does photoaging have treatment?
It can be reduced with daily sun protection and skin treatments indicated by a qualified professional, such as topical care, surface procedures and biostimulation. New lesions or ones that change in appearance should be assessed by a dermatologist.