Red light therapy is not a proven first-line treatment for melasma. A 2023 review found only nine relevant studies on photobiomodulation and melasma. Early research suggests that red or near-infrared LED light may reduce pigmentation in some patients, but the evidence is limited and treatment settings are not standardized. Visible light may also worsen melasma, especially in people with darker skin tones.
If melasma is your main concern, use red light therapy only as a possible add-on after speaking with a dermatologist. An at-home LED mask should not replace sun protection or established melasma treatments.
Red Light Therapy for Melasma: At a Glance
| Question | Practical answer |
|---|---|
| Can red light fade melasma? | Possibly, but this has not been established reliably. |
| Is red light a first-line treatment? | No. Sun protection and dermatologist-guided topical treatment have stronger support. |
| Can red light make pigmentation worse? | It may, particularly in people with darker skin or a history of post-inflammatory hyperpigmentation. |
| Is red light the same as IPL or laser treatment? | No. Red-light LED therapy uses lower-energy light and is different from IPL and pigment-targeting lasers. |
| Should you buy a red-light mask specifically for melasma? | Generally no. The evidence is not strong enough to justify buying one for this purpose alone. |
Why Might Red Light Help Melasma?
Red light therapy, also called photobiomodulation, uses low-intensity red or near-infrared light. Laboratory and early clinical research suggests that some wavelengths may affect melanocyte activity, tyrosinase, inflammation, redness and dermal blood vessels linked to melasma.
The 2023 review found only nine relevant studies. It described photobiomodulation as a possible treatment but said better clinical trials are needed to determine the right wavelength, dose, treatment schedule and long-term effect.
A possible biological effect does not show that a consumer red-light mask will visibly improve melasma.
How Strong Is the Clinical Evidence?
The clinical evidence is too limited to recommend red light therapy as a standard melasma treatment.
One small study involved 60 women with darker skin types. The participants received 36 LED treatments over nine months and showed improvement. However, the study does not show that every consumer red-light mask will produce the same result. It also does not replace larger, well-controlled trials.
A 2025 randomised pilot trial tested amber LED photobiomodulation, not standard red light, against topical tranexamic acid. The study included only 21 women and found no significant difference in Melasma Area and Severity Index or Physician's Global Assessment scores. The researchers considered the trial underpowered and said that firm conclusions could not be drawn.
A recent review also rated the evidence for red or infrared LED treatment in melasma as low.
Can Red Light Therapy Worsen Melasma?
Yes, red light therapy may worsen melasma, so caution is important.
Red light is part of the visible-light spectrum. The American Academy of Dermatology states that visible light can worsen melasma, particularly in people with darker skin tones. It advises people with darker skin to consult a dermatologist before using an at-home red-light device because visible light may contribute to more intense, longer-lasting hyperpigmentation.
The risk may be more relevant if you:
- Have Fitzpatrick skin type IV, V or VI
- Develop post-inflammatory hyperpigmentation easily
- Have melasma that darkens with heat, light or irritation
- Use irritating exfoliants, retinoids or bleaching products
- Take medication that increases light sensitivity
- Have a light-sensitive condition such as lupus
This does not mean every red-light mask will worsen melasma. It means the balance between possible benefit and risk is less predictable, especially for darker skin tones.
What Works Better as a Starting Point?
The starting point for melasma is consistent protection from ultraviolet and visible light.
The American Academy of Dermatology recommends broad-spectrum sunscreen with SPF 30 or higher, along with shade and protective clothing. For melasma, a tinted sunscreen containing iron oxides can help protect against visible light as well as UV exposure.
A dermatologist may also recommend prescription or non-prescription treatments such as:
- Hydroquinone
- Tretinoin
- Triple-combination cream containing tretinoin, hydroquinone and a corticosteroid
- Azelaic acid
- Kojic acid
- Vitamin C
- Carefully selected procedures for resistant melasma
The American Academy of Dermatology describes melasma care as a combination of sun protection, topical medication and, in some cases, an in-office procedure.
Red Light Therapy Versus IPL and Laser Treatment
Red-light LED therapy is different from intense pulsed light and pigment-targeting laser treatment.
| Treatment | Main characteristic | Melasma consideration |
|---|---|---|
| Red or near-infrared LED | Low-intensity photobiomodulation | Early evidence and uncertain benefit |
| IPL | Broad-spectrum, higher-energy light | May help selected cases but can worsen pigmentation |
| Pigment-targeting laser | Concentrated, higher-energy light | Requires careful patient selection and settings |
| Tinted sunscreen | Helps reduce UV and visible-light exposure | Supports prevention of recurrence and darkening |
The American Academy of Dermatology says laser and light procedures may improve results when added to medication and sun protection. A qualified dermatologist should select the procedure and settings.
If You Already Own a Red-Light Mask
If you use a mask for another reason, such as acne or skin texture, ask a dermatologist before applying it to melasma-prone skin.
If your dermatologist agrees, follow these precautions:
- Use a device cleared for its stated purpose. FDA clearance indicates safety standards, not proven effectiveness for melasma.
- Follow the manufacturer's exposure time exactly.
- Do not use the device over irritated or peeling skin.
- Use the recommended eye protection.
- Take photographs under the same lighting before starting.
- Stop if the patches become darker, warmer, irritated or more noticeable.
- Continue daily use of tinted sunscreen.
The American Academy of Dermatology notes that at-home red-light devices can cause temporary irritation. Long-term effects and the best treatment settings remain uncertain.
Bottom Line
Use red light therapy for melasma only if a dermatologist thinks the possible benefit outweighs the risk. Tinted SPF 30 or higher, protection from visible light and a dermatologist-guided treatment plan remain the better-supported options.
A red-light mask is an optional add-on. It is not a replacement for melasma treatment.