Before an IPL (intense pulsed light) treatment, there are several things you need to avoid to protect your skin and get the best results. Skipping these steps doesn’t just reduce effectiveness. It can lead to burns, blistering, and permanent changes in skin color. Here’s what to stop, pause, or reschedule before your appointment.
Avoid Sun Exposure and Tanning
This is the single most important rule. IPL works by targeting pigment in the skin, whether that’s dark spots, redness, or hair follicles. When your skin is tanned, the device can’t distinguish between the pigment it’s supposed to treat and the extra melanin from sun exposure. The result can be burns, blisters, or patches of discoloration that take weeks to fade and, in rare cases, become permanent.
Stay out of direct sun for at least two weeks before your appointment, and avoid tanning beds entirely. If you’ve had significant sun exposure recently, it’s better to reschedule than to risk complications. Wear broad-spectrum sunscreen daily in the weeks leading up to treatment, even on cloudy days.
Stop Retinoids and Exfoliating Acids
Retinoids (prescription tretinoin, over-the-counter retinol, and adapalene) make skin thinner and more sensitive to light. Stop using any topical retinoid at least one to two weeks before your IPL session. If you’ve been taking oral isotretinoin (commonly known by the brand name Accutane), the waiting period is much longer. Guidelines from the British National Formulary recommend waiting at least six months after your last dose before any laser or IPL treatment, because the drug affects your skin’s ability to heal for months after you stop taking it.
The same caution applies to chemical exfoliants like glycolic acid, salicylic acid, and lactic acid. These strip away the outer layer of skin, leaving it more vulnerable to the heat from IPL. Pause these products about a week before treatment. Stick to a gentle cleanser and basic moisturizer in the days leading up to your appointment.
Check Your Medications
Certain medications make your skin significantly more reactive to light, which raises the risk of burns during IPL. The most notable ones include:
- Certain antibiotics: Minocycline in particular carries a risk of hyperpigmentation and should be stopped four weeks before treatment. Your provider may suggest switching to an alternative.
- St. John’s Wort: This herbal supplement increases photosensitivity. Stop it four weeks before your session.
- Amiodarone: A heart medication that causes photosensitivity and pigmentation changes.
- Oral and topical steroids: These can impair skin healing. Topical steroids should be stopped at least one week before treatment.
Tell your provider about every medication and supplement you’re taking during your consultation. Some drugs are absolute contraindications, meaning IPL cannot safely be performed while you’re on them.
Skip Aspirin, Ibuprofen, and Alcohol
For 48 hours before your treatment, avoid aspirin, ibuprofen, and alcohol. All three thin the blood and increase your chances of bruising. If you need pain relief during that window, acetaminophen (Tylenol) is generally a safer choice since it doesn’t have the same blood-thinning effect.
Don’t Wax, Pluck, or Use Epilators
If you’re getting IPL for hair removal, this is critical. IPL targets the pigment inside the hair follicle, so the hair root needs to be intact for the treatment to work. Waxing, plucking, threading, and epilating all pull the hair out from the root, leaving nothing for the light to target. Stop all of these methods at least six weeks before your first session to allow hair to grow back into the follicle.
Shaving is the one hair removal method that’s compatible with IPL because it cuts hair at the surface without disturbing the root. Most providers will ask you to shave the treatment area a day or two before your appointment.
Don’t Schedule Other Skin Treatments Too Close
Chemical peels, Botox, dermal fillers, and microneedling all need a buffer zone around your IPL session. Schedule any injectables or chemical peels at least two weeks before your IPL treatment. Your skin needs time to recover from one procedure before being exposed to the intense light energy of another. Stacking treatments too close together increases the risk of inflammation, swelling, and unpredictable healing.
Health Conditions That May Rule Out IPL
Some health conditions make IPL unsafe regardless of how well you prepare. IPL is contraindicated for people who are pregnant or breastfeeding, those with epilepsy, and anyone with active cancer undergoing chemotherapy or radiation. Conditions triggered or worsened by light exposure, such as lupus and porphyria, are also on the list.
If you have a history of cold sores or herpes simplex, IPL can trigger an outbreak in the treated area. Your provider may prescribe an antiviral medication to take before treatment as a precaution. Other conditions that require careful evaluation include inflammatory skin conditions like dermatitis, a history of keloid scarring, vitiligo, psoriasis, uncontrolled diabetes, and hormonal disorders like PCOS. None of these necessarily mean you can’t have IPL, but your provider needs to know about them to adjust the treatment plan or decide if IPL is the right option for you.
What Happens When You Skip These Steps
The consequences of ignoring pre-treatment guidelines range from mild to serious. On the mild end, you might experience extra redness, swelling, or bruising that takes days to resolve. On the more serious end, burns and blisters can develop, and picking at those blisters or the crusts that form over treated pigmented spots can lead to scarring.
The most common complication from poor preparation is pigmentation changes. Hyperpigmentation shows up as dark brown or reddish patches, while hypopigmentation appears as lighter spots where skin color has been lost. Both can take weeks or months to resolve, and in rare cases the changes are permanent. Nearly all of these complications trace back to the same root causes: sun exposure before treatment, photosensitizing medications still in your system, or skin that was too irritated from recent exfoliation or procedures.