What these spots are
Harvard Health describes them as darkened patches of skin pigment, known as solar lentigo or age spots. They are most common in people over 55 and can appear on any sun-exposed area, including the face, shoulders, back and neck.
They do not itch or hurt. The only sign is the spot itself, and they are harmless.
Why they appear
Sun exposure is the main cause. According to Harvard Health, the skin deposits pigment in damaged areas. Sun exposure before age 20 has the biggest effect on how skin looks later.
Cleveland Clinic adds that ultraviolet radiation breaks down collagen and leads to what is called photoageing. The neck and chest are often left unprotected, which is why they show it.
Daily habits that help
Limiting sun exposure lowers the risk and can stop existing spots from growing or darkening, says Harvard Health. It recommends covering up with clothes, wearing a hat, using sunscreen and avoiding the strongest sun from 10 a.m. to 3 p.m.
Cleveland Clinic advises daily sunscreen, avoiding tanning beds and moisturising. Extend sunscreen to the neck and chest too, which are often forgotten.
What light can do, and its limits
A review of low-level light therapy records that red and near-infrared light is absorbed by mitochondria in skin cells. On pigmentation, it cites a single study in which red light reduced melanin, and its authors say this may relate to skin brightening.
The same review calls the field controversial, with small studies and no agreement on dose or wavelength. The sources cited contain no data showing that a home device lightens sun spots.
In cosmetic terms, a device may help improve the overall look and radiance of neck and chest skin. It does not remove spots.
Using a device at home safely
Apply it to clean skin, keeping to the manufacturer time and frequency. The light therapy review warns that wrong parameters can damage tissue, and that make-up or creams left on the skin can reduce effectiveness.
Do not use it over a spot that has changed, is very dark, irregular, itchy or bleeding, nor over wounds or irritated skin. If you notice redness that does not settle or discomfort, stop using it.
When to see a dermatologist
Harvard Health says to see a doctor if you notice other changes in your skin, to rule out cancer or other conditions. A spot that changes in size, colour or shape, becomes very dark or has irregular edges should be checked by a dermatologist.
If you want to lighten spots for cosmetic reasons, a dermatologist may prescribe medication or suggest another therapy.
Realistic expectations
Harvard Health explains that age spots do not need treatment. Most fade over time, although they probably will not disappear completely.
The most effective step is preventing new ones with steady sun protection. A device can sit alongside that routine, but it is best seen as complementary care, not a spot eraser. If a spot has been there a long time and has not changed, there is usually no urgency, but it costs nothing to mention it at your next routine check-up.
Sources
- Harvard HealthAge Spots (Solar Lentigo, Liver Spots)
- PubMed Central (Seminars in Cutaneous Medicine and Surgery)Low-level laser (light) therapy (LLLT) in skin: stimulating, healing, restoring
- Cleveland ClinicWrinkles & Fine Lines: Types, Causes & Prevention
Informational content. It does not replace the advice of a healthcare professional. Images are illustrative, not customer results.
