Preparing for IPL is the flossing of hair removal. Nobody brags about it, everybody knows they should do it, and skipping it causes problems that were entirely avoidable. The difference is that neglecting IPL prep does not just earn a disappointed look from your dentist. It can mean a wasted session, weaker results, or a genuine burn.

The good news is that learning how to prepare for IPL takes minutes and is mostly common sense once someone explains the why. So work through the complete, no-nonsense checklist below for getting your skin ready, whether it is your very first session or your fifteenth.

Quick answer: To prepare for IPL, shave the treatment area the day before (never wax or pluck), avoid sun and self-tan for two to four weeks beforehand, and arrive with clean, dry skin free of makeup, deodorant, lotion and perfume. Do a patch test 24 to 48 hours ahead, check the area suits your skin tone and hair colour, and pause retinoids or strong acids for a few days. Good prep makes IPL safer and more effective.

Key Takeaways

  • Shave the day before IPL, but never wax, pluck or epilate, because IPL needs the hair root intact below the skin.
  • Avoid sun exposure and self-tan for two to four weeks before a session. Tanned skin holds more melanin and burns more easily.
  • Turn up with clean, dry, product-free skin. Makeup, deodorant, lotion and fake tan all interfere with the light.
  • Always patch test before a first session, and check the device suits your skin tone and hair colour.
  • Learning to prepare for IPL is only half the job. Aftercare, especially sun protection, protects both your skin and your results.

Why You Prepare for IPL: Safety and Results

Preparing for IPL means getting your skin into the state where the light can do its job safely and effectively: hair shaved, skin clean, and no extra surface melanin from a tan getting in the way. Skip the prep and you undermine both halves of that sentence, safety and results. Done well, the way you prepare for IPL protects your skin and sharpens your results in equal measure.

The safety part is not scaremongering. IPL works by having pigment absorb light and convert it to heat. Anything that adds unexpected pigment at the surface, like a tan or fake tan, gives the light the wrong target and raises the risk of burns. This is why the American Academy of Dermatology advises avoiding sun exposure for around four weeks before light-based hair removal. The results part is simpler: surface hair scorches and wastes energy that should be reaching the follicle, so an unshaved session is a weaker one.

How to Prepare for IPL: 8 Essential Steps

Work through these eight steps and you will prepare for IPL properly every time, whether it is session one or session fifteen. None takes long, and together they are the difference between a safe, effective session and a wasted or painful one.

1. Patch Test First

Before your first ever session, test a small, discreet patch of the area and wait 24 to 48 hours. Mild redness that fades is fine. Blistering, prolonged pain or any colour change means stop and reassess. It is two minutes of patience that can save you a nasty reaction across a whole leg.

2. Shave the Day Before

A clean razor on a towel, representing the step of shaving the day before an IPL session
Shave the day before, do not wax or pluck. IPL needs the follicle intact below the surface.

This one confuses people, so read it carefully. You shave before IPL, but you must not wax, pluck, epilate or thread. IPL targets the pigment in the hair root sitting in the follicle, so the root needs to be there. Waxing and plucking remove it entirely, leaving IPL nothing to work on. Shaving simply trims the surface hair so it does not scorch, while leaving the root exactly where the light needs it. Shave the day before rather than the morning of, so the skin is calm.

3. Avoid Sun and Self-Tan

Woman applying sunscreen to her arm, showing the need to avoid sun before IPL and protect skin after
Sun and self-tan raise surface melanin, which raises burn risk. Give it a few weeks clear.

For two to four weeks before a session, keep the area out of direct sun and skip sunbeds and fake tan entirely. All three raise the melanin at your skin surface, which is exactly what IPL is trying to distinguish from your hair. More surface pigment means a higher chance of burns and less effective, more cautious treatment. If the area has caught some sun, wait for it to fade before treating.

4. Arrive With Clean, Dry Skin

On the day, the treatment area should be freshly cleansed and completely dry, with no products on it at all. That means no makeup, no deodorant, no moisturiser, no perfume, no sunscreen. Any of these can sit between the light and your skin, reducing effectiveness and, in some cases, reacting with the heat. Clean and bare is the whole requirement.

5. Check Your Skin Tone and Hair Colour Suit It

IPL needs dark hair on lighter-to-medium skin, and it is not suitable for the deepest skin tones, where the burn risk is too high. It also does nothing on blonde, red, grey or white hair. Reputable devices include a skin-tone sensor that will not fire on skin too dark to treat safely, and you should trust it. There is much more on this in IPL for Dark Skin.

6. Pause Retinoids and Strong Actives

If you use retinoids or strong exfoliating acids on the treatment area, pause them for a few days before a session, since they thin and sensitise the skin. This matters most on the face. Check the specific guidance for your device, and when in doubt, leave a longer gap rather than a shorter one.

7. Check Your Medications

Some medications increase sensitivity to light, including certain antibiotics, acne treatments and others. If you take any regular medication, check whether it is photosensitising before starting IPL, and speak to a doctor or pharmacist if you are unsure. This is a quick question that avoids an unpleasant surprise.

8. Set Up and Protect Your Eyes

Read your device manual, pick the right intensity for the area, and have everything to hand before you start. If your device or treatment calls for eye protection, use it, and never look directly at the flash. A calm, prepared five minutes beats a rushed, squinting one.

What to Avoid as You Prepare for IPL

  • Waxing, plucking, epilating and threading in the weeks before, since they remove the root IPL needs.
  • Sun exposure, sunbeds and self-tan for two to four weeks beforehand.
  • Treating over active breakouts, cuts, sunburn or irritated skin. Let it heal first.
  • Perfume and heavily fragranced products on the area, which can irritate freshly treated skin.
  • Rushing your first full session without a patch test. Every single time, the patch test comes first.

IPL Aftercare: The Other Half of the Job

Woman applying moisturiser after treatment, part of IPL aftercare
Aftercare is prep in reverse: cool it, moisturise, and keep it out of the sun.

The way you prepare for IPL gets you to a good session; aftercare protects the result and your skin. It is essentially the same list in reverse. For 24 to 48 hours afterwards, keep the area cool and avoid anything that heats or irritates it.

  • Soothe any redness with a cool compress and a fragrance-free moisturiser.
  • Skip hot showers, saunas, steam rooms and vigorous exercise for a day or two.
  • Avoid sun exposure and apply SPF to the treated area, which is more vulnerable to pigmentation right after treatment.
  • Hold off on retinoids, acids and exfoliation for a couple of days while the skin settles.

Common Mistakes When You Prepare for IPL

Most IPL disappointments trace back to a handful of avoidable mistakes when people prepare for IPL. Waxing instead of shaving is the classic, leaving the light with no root to target. Turning up with a fresh tan or fake tan is the riskiest. Forgetting to remove deodorant or moisturiser quietly weakens the session. And treating unshaven skin produces a scorched-hair smell and a weaker result in equal measure. None of these are hard to avoid once you know them, which, conveniently, you now do.

Your Prepare-for-IPL Checklist at a Glance

If you remember nothing else, remember this. To prepare for IPL: shave the day before, stay out of the sun for a few weeks, turn up clean and product-free, patch test, and check your skin tone and hair colour suit the device. To recover well: cool the skin, moisturise, and protect it from the sun. That short list is the whole discipline, and it is why people who prepare for IPL carefully get better, safer results than those who wing it.

Frequently Asked Questions: How to Prepare for IPL

How do I prepare for IPL hair removal?

To prepare for IPL, shave the treatment area the day before, but do not wax or pluck, since IPL needs the hair root intact. Avoid sun and self-tan for two to four weeks, and arrive with clean, dry skin free of makeup, deodorant, lotion and perfume. Do a patch test 24 to 48 hours before your first session, and check the device suits your skin tone and hair colour.

Should I shave before IPL?

Yes, shave the day before. IPL targets the pigment in the hair root, and shaving only removes the surface hair while leaving the root in place, which is exactly what you want. Surface hair that is not shaved scorches and wastes energy. Just never wax, pluck or epilate before IPL, because those remove the root the light needs.

Why can’t I wax before IPL?

Because waxing, plucking and epilating remove the entire hair including the root, and the root is what IPL heats to disrupt the follicle. Without it, the light has nothing to target and the session does little. When you prepare for IPL, shaving is the only pre-session hair removal that works, because it trims the surface while leaving the root intact.

How long before IPL should I avoid the sun?

Aim for two to four weeks without sun exposure, sunbeds or self-tan on the treatment area, in line with dermatology guidance for light-based hair removal. A tan raises surface melanin, which increases the risk of burns and makes treatment less effective. If your skin has caught the sun, wait for it to fade before your session.

Can I use IPL on the same day I shave?

It is better to shave the day before rather than immediately before, so the skin is calm and any minor irritation from shaving has settled. Shaving right before a session can leave the skin slightly sensitised. If you must shave and treat on the same day, do it gently and give the skin a few hours if you can.

Do I need to patch test every time?

A full patch test is essential before your first session and any time you treat a new area or notice your skin has changed, for example after sun exposure. Once you have established that your skin tolerates a setting well, you do not need a fresh 48-hour test before every routine session, though you should always start cautiously on sensitive areas.

What should I not put on my skin before IPL?

Nothing, ideally. On the day, the area should be clean, dry and free of makeup, deodorant, moisturiser, sunscreen, perfume and self-tan. All of these sit between the light and your skin, reducing effectiveness and occasionally reacting with the heat. Cleanse the area, dry it fully, and apply nothing until after the session.

Can I do IPL if I’m on medication?

It depends on the medication. Some drugs, including certain antibiotics and acne treatments, make skin more sensitive to light and are not compatible with IPL. If you take any regular medication, check whether it is photosensitising and ask a doctor or pharmacist before starting. This quick check avoids reactions that good prep otherwise prevents.

What should I do after an IPL session?

For 24 to 48 hours, keep the area cool and calm. Soothe redness with a cool compress and fragrance-free moisturiser, skip hot showers, saunas and hard exercise, avoid sun exposure, and apply SPF to the treated skin. Hold off on retinoids and exfoliating acids for a couple of days. Good aftercare protects both your skin and your results.

Sources and Further Reading