IPL and Retinol: How to Use Both Safely

The short answer is that these IPL and Retinol pull in opposite directions. One strips your skin back; the other blasts it with light energy. Do them together and you're asking for trouble. Here's the longer version.

Retinol functions by attaching itself to cell receptors and essentially informing them to produce new cells at a much faster pace. With newer cells pushing up to the surface faster than before, the end result is smoother-looking skin with an even tone. The problem with this process is that it causes the thinning of the skin’s outermost layer, called the stratum corneum, while it happens. It can be likened to the skin being constantly renewed but left vulnerable throughout the process.

Prescription retinoids like tretinoin push this process much harder than anything you'd buy over the counter. That's why they need a longer gap before any light treatment, they leave the barrier significantly more compromised.

The IPL produces a series of pulses containing broadband light onto the skin. The melanin found within your hair follicle and skin will absorb this light and then convert the light to energy. However, when your skin’s barrier is in good condition, it can handle this energy well. But when retinol has thinned the outer layer, the skin's ability to buffer and disperse heat drops sharply. The same IPL setting that would be perfectly fine on untreated skin can cause a burn on retinol-sensitised skin.

Yes. Using IPL on skin previously exposed to retinol or any other retinoid causes an increased risk of burning, blistering, irritation, and PIH (post-inflammatory hyperpigmentation). Prescription retinoids such as tretinoin and adapalene have the highest risks.

The effect of retinol is to increase skin cell turnover, while IPL produces heat from light deep inside the skin. If used immediately, sensitised skin cannot cope with heat, resulting in burns when IPL procedures should have been painless under normal circumstances.

This can cause lasting redness, peeling, dark spots or even burns and scars. People with skin types 4 – 6 and those with problems of pigmentation such as melasma have an even greater risk.

There's no single answer here. It depends entirely on what you're using. Retinyl palmitate in a night cream is very different from a prescription tretinoin. The table below breaks it down by formulation so you know exactly where you stand.

No. Whether you're targeting hair follicles or treating pigmentation, IPL converts light to heat inside your skin either way. The retinol sensitisation risk doesn't care what the session is for. The same rules apply to both.

Vague warnings don't change behaviour, specific ones do. Here's what the research and clinical experience shows.

Many of those who use IPL do so with the aim of evening their skin tone. And in such a situation, having an outcome of post-inflammatory hyperpigmentation (PIH) would be one of the most discouraging outcomes imaginable. This is where, due to exposure to excessive warmth by the thinning of the skin from retinol, the skin experiences inflammation and ends up producing too much melanin as a means of trying to heal itself. The consequence of this is that the individual ends up with even more dark spots than before.

Even in cases where burns and PIH are avoided, treating compromised skin slows everything down. Your skin is already juggling accelerated cell turnover from the retinol, and adding the stress of IPL on top of that, and it'll be occupied with repair for longer than usual. Extended flaking, tightness, and sensitivity push back your next session, which ends up slowing down the results you were trying to speed up.

Discontinuing retinol doesn't have to mean you give up on skincare. There is an established range of active compounds that help with skin health, keep your skin hydrated, even deal with tone and texture issues, while not making you more photosensitive

Missing the glow that retinol was giving you? These are worth trying during your pause, they work on tone and radiance without compromising your skin's response to light:

Pure L-ascorbic acid at 10–15%+ can mildly acidify the skin's surface, which adds to your sensitisation load in the 48 hours before a session. Stick to lower concentrations or the stable derivatives listed above if you want to keep using vitamin C right through your treatment course.

Retinol gets most of the attention, but it's not the only thing that can leave your skin in a worse position going into an IPL session. These all need a break in the 24–72 hours before treatment.

The 72 hours before an IPL session are the period where preparation directly determines both your safety and your results. Follow this sequence.

1. Double-check your retinol pause is done

Cross-reference the table above against your specific product. Not sure of the strength? Default to a 10-day pause. It's not worth guessing.

2. Avoid all actives for 48 hours

Use a basic skincare regimen involving a mild cleanser and non-fragranced moisturiser along with SPF 30+ during the daytime. No acids, no peels, no treatments.

3. Wear SPF every day. No exceptions

Sunlight during IPL treatments greatly increases the risk of pigment formation and delays recovery. Minimum broad-spectrum SPF 30 every single day, whether it is sunny or cloudy.

4. Shave (for hair removal IPL) — do not wax or epilate

Waxing and epilation pull out the hair root that IPL needs to target. Shave around 24 hours before, and don't apply any post-shave actives to the area afterwards.

5 Arrive or begin with clean, product-free skin

Cleanse using a gentle product before commencing. No use of serums, oils, or moisturizers during the initial cleansing of the target treatment area.

6. Patch test any new device or new treatment area

In case of treatment of a previously untouched area or a return to treatment after a period of rest, ensure you conduct a patch test first and allow 24 hours.

Devices like the Ulike Sapphire Air give you full control over your IPL sessions — timing, intensity, frequency. That's a genuine advantage over booking clinic appointments. But it also means nobody's checking your skin prep for you. The responsibility sits entirely with you.

No, and this is a question worth addressing directly. Ulike's sapphire ice-cooling keeps the surface of your skin more comfortable during treatment by managing contact temperature. That's a real benefit for the experience. But the burn and pigmentation risk from retinol-sensitised skin happens below the surface, where IPL light converts to heat in the dermis. Cooling the skin's surface doesn't touch that. The pause timelines in the table above apply in full when you're using any Ulike device.

Follow the full retinol pause timelines. Coming back after a break or an active ingredient pause? Start at the lowest recommended intensity setting and work up from there.

At-home devices run at lower fluence (J/cm²) than clinic equipment. That reduces the risk somewhat but it doesn't eliminate it. The retinol compatibility rules are the same.

More pigmented skin tones (Fitzpatrick scale IV–VI) have increased melanin content, indicating that both retinol sensitization and PIH susceptibility are high. Verify if your skin tone falls under the safe zone for use on the Ulike system.

Most Ulike sessions run every one to two weeks. Schedule your retinol use around your session dates; that's the direction the planning should go, not the other way around.

The gap between sessions isn't dead time. It's when your skin does its repair work, rebuilding from the last session and getting ready for the next one. What you put on it during this window directly affects how well that process goes.

Go for mild cleansers and non-scented moisturisers with ceramides and hyaluronic acid. Sunscreens also need to be used. Avoid any products that have any active ingredients or exfoliants like retinol. In case the treated area becomes warmer or slightly reddish, use gels made from aloe vera or centella asiatica.

From around day three, you can start bringing back gentler actives, niacinamide, low-concentration vitamin C derivatives, azelaic acid. Keep wearing SPF every day without fail. Hold off on retinol until you're past the clearance window for your next scheduled session. In practice, if you're on a two-week treatment cycle, retinol can only sit in the middle few days — never right before or right after a session.

The moment that redness persists beyond the 48-hour period, your skin feels a sting when applying a regular moisturiser, or your skin flakes unexpectedly in the affected area, then your barrier needs more time to repair itself. Don't push retinol back in yet. Give it more time, and if it's not resolving, extend the gap before your next IPL session, too.

A simple guideline to follow: only when your skin has returned to its normal state both in appearance and feeling. No redness, no sensitivity, no dry patches. Typically, this happens about five to seven days after your last IPL treatment.

How to bring retinol back without undoing your progress

1 Ensure that your skin is really back to normal.

This means no signs of any redness, tightness, or flaking. Should you notice anything different, wait for a few more days.

2 Go in at a lower strength than you were using before

Even if you were comfortably using 1% retinol before your IPL course, start back at 0.25%–0.5%. Your skin's tolerance isn't where it was — give it time to rebuild.

3 Use it two or three times a week, not nightly

Nightly retinol can wait. Let your skin tell you it's coping before you increase frequency. A few applications first will give you that information.

4 Monitor the skin very carefully during the initial weeks

Dryness may be expected at the beginning of use, while burning, peeling, and redness are signs that the product should not be used any further.

5 Plan backwards from your next session date

Look at your calendar. Your last retinol application before the next session needs to clear the pause window for your formulation. Build the schedule around that not the other way around..

Yes. The sensitivity only affects the skin where retinol was actually applied. So if you're doing IPL hair removal on your legs, your face retinol routine can carry on as normal. Just watch the edges if you're treating close to an area where you'd usually apply retinol (the upper lip, for example), be careful not to let product drift into the treated zone in the days leading up to a session.

The article has been written by the Ulike UK skincare experts and clinically validated by an accredited aesthetic practitioner. It is purely an informational guide for you. In case you are suffering from a skin disease or have been using a prescription retinoid, it is advised that you meet an aesthetic practitioner or dermatologist before moving forward.