It is best to avoid elective red light therapy during pregnancy unless your obstetric clinician approves the exact device and treatment plan.
Red light therapy, also called photobiomodulation or low-level light therapy, uses non-UV light and is designed to produce little or no heat. Pregnancy-specific safety research is limited. The U.S. Food and Drug Administration lists 2 pregnancy-related reasons not to use certain photobiomodulation body-contouring treatments: being pregnant or planning to become pregnant. FDA guidance also states that the safety of nonthermal laser treatment during pregnancy has not been established.
Red Light Therapy During Pregnancy at a Glance
| Type of treatment | Recommended approach during pregnancy |
|---|---|
| LED face mask for wrinkles or acne | Postpone use unless your obstetric clinician approves the specific device |
| Red-light hair-growth cap or helmet | Avoid elective use unless a clinician approves it |
| Full-body red-light panel | Do not use without explicit obstetric guidance |
| Red or near-infrared device over the abdomen or pelvis | Avoid unless prescribed and supervised by a qualified clinician |
| Medically necessary light treatment | Discuss the benefits, risks and alternatives with your obstetric and treating clinicians |
| UV light therapy, IPL or higher-powered laser treatment | These are different treatments and require separate pregnancy-specific advice |
Why Is Red Light Therapy Not Automatically Considered Safe?
Red light therapy is not automatically considered safe during pregnancy because consumer devices vary widely, while research in pregnant users remains limited.
Short-term red light therapy appears to have a relatively mild safety profile in nonpregnant adults. Reported side effects include temporary irritation, mild pain and skin sensitivity. Burns and pigmentation changes are less common. The American Academy of Dermatology also notes that the long-term effects and ideal treatment doses are not fully understood.
Devices can differ in:
- Wavelength, including visible red light and near-infrared light
- Power and treatment duration
- Distance from the skin
- Continuous or pulsed output
- Treatment area
- Heat produced during use
- Whether the device has been tested in pregnant users
An FDA-cleared device is not automatically proven safe during pregnancy. FDA clearance generally means that the device is considered low risk for its intended use in the general population. It does not mean the device has been specifically studied in pregnant users.
Is Red Light the Same as UV Phototherapy, IPL or Laser Treatment?
No. Red LED therapy, near-infrared therapy, ultraviolet phototherapy, intense pulsed light and cosmetic lasers are different technologies.
Red-light photobiomodulation usually uses low-level visible or near-infrared light without intentionally heating tissue. IPL and some laser procedures deliver more intense energy and may heat or alter the skin. UV phototherapy uses ultraviolet wavelengths and has different pregnancy considerations.
The FDA distinguishes nonthermal low-level light therapy from light-based procedures that heat tissue.
MotherToBaby states that most types of therapeutic light are not expected to pass through the skin and reach the developing baby, but research during pregnancy remains limited. That information mainly concerns clinical phototherapy. It does not establish that every at-home red-light or near-infrared device is safe.
What Should You Do If You Want to Use a Red-Light Mask While Pregnant?
Ask your obstetric clinician before using a red-light mask or another red-light device during pregnancy. This is especially important if you plan to treat your abdomen, pelvis or a large area of the body.
Before using the device:
- Check the manufacturer's pregnancy warning in the instructions, not only on the product's marketing page.
- Confirm whether the device uses near-infrared light or produces heat in addition to visible red light.
- Use the recommended eye protection if the instructions require it.
- Do not exceed the stated treatment time or change the recommended distance.
- Stop if you experience unusual warmth, pain, burning, skin irritation, dizziness or a headache.
For cosmetic goals such as wrinkles, pigmentation or hair growth, waiting until after delivery avoids an unnecessary and uncertain exposure. If you want to treat a medical condition, ask your obstetric clinician and dermatologist or other treating specialist to compare red light with options considered compatible with pregnancy.
What If You Already Used Red Light Therapy Before Realizing You Were Pregnant?
A previous session does not automatically mean there is a problem. Stop further sessions for now and tell your prenatal clinician:
- The device brand and model
- The wavelength, if listed
- The area treated
- How long and how often you used it
- Whether the device produced noticeable heat
- Whether you experienced burns, pain or skin changes
Your clinician can decide whether follow-up is needed based on the device and the exposure.
Bottom Line
For cosmetic use, waiting until after delivery is the most cautious choice. If red light therapy is being considered for a medical condition, discuss the device and treatment plan with your obstetric clinician and treating specialist before continuing.