Adapalene for Acne: How to Start Differin, the OTC Retinoid

Adapalene is a retinoid made for acne, sold without a prescription in the US as Differin Gel 0.1%. Use a pea-sized amount on your whole face once a day after cleansing, follow with moisturizer, and wear sunscreen every morning. Expect dryness and possibly a few extra pimples in the first weeks; real results take about 12 weeks of daily use.

This guide walks through how to start it, what the first three months usually look like, how to pair it with benzoyl peroxide and moisturizer, and how adapalene differs from retinol and from prescription tretinoin.

What is adapalene, and how does it treat acne?

Adapalene is a synthetic, third-generation retinoid that unclogs pores and calms the inflammation behind breakouts. DermNet describes it as a first-line option for mild to moderately severe acne, including comedonal and inflammatory acne, applied once daily. It works on the plugs inside pores that become blackheads, whiteheads and pimples, which is why it prevents new spots instead of drying out the ones you already have.

It comes in more than one form. MedlinePlus lists it as the drug in Differin, and in Epiduo and Epiduo Forte combined with benzoyl peroxide. In the US, the American Academy of Dermatology notes that adapalene comes in both prescription and over-the-counter formulations.

How do I start using Differin (adapalene)?

Start with a pea-sized amount once a day, spread over your whole face. Differin's own directions are to "apply a pea-sized amount of Differin Gel once daily AM or PM to the full face", then moisturize, and to use it day or night but not both to limit irritation. MedlinePlus says to spread a thin film over the entire affected area, not just one spot, and warns that using more won't speed results and may irritate your skin.

1. Wash with a gentle cleanser and pat dry. Let your skin dry fully for a few minutes.
2. Squeeze out one pea-sized amount. Dot it on your forehead, cheeks and chin, then spread it thinly.
3. Keep it away from the corners of your nose, your lips and the eye area, where skin irritates easily.
4. Follow with a fragrance-free moisturizer.
5. In the morning, apply a broad-spectrum sunscreen. MedlinePlus notes adapalene can increase sun sensitivity and advises avoiding tanning beds.

If your skin is easily irritated, start every second or third night for the first two weeks and build to nightly use. Differin's FAQ for its combination gel suggests the same approach: start every other day or every third day and build up to daily use.

How long does Differin take to work?

Plan on about 12 weeks before judging it. Differin says to "use consistently for 12 weeks for best results", MedlinePlus says full benefit can take 8 to 12 weeks or longer, and DermNet notes improvement may take 12 weeks or longer. Here is a typical timeline:

MedlinePlus places redness, scaling, dryness and burning or stinging usually in the first 2 to 4 weeks. If you stop when the skin is at its driest, you never reach the part where it works.

Is adapalene purging normal?

Yes, an early flare is a known effect. MedlinePlus states that acne may get worse in the first few weeks and new pimples may surface, and advises continuing treatment even if this happens. Retinoids act on the clogged pores themselves, so plugs that were already forming can come to the surface sooner.

Purging should look like your usual acne, in your usual places, and fade within a few weeks. Breakouts in new areas, a rash, or bumps that keep getting worse after six to eight weeks point to irritation or a product that doesn't suit you. Our guide to purging vs a breakout goes through the differences. Stop and seek care right away for hives, trouble breathing, or swelling of the face, lips, tongue or throat, which MedlinePlus lists as emergency symptoms.

Can I use adapalene with benzoyl peroxide?

Yes. Adapalene is one of the few retinoids that holds up when combined with benzoyl peroxide. In a laboratory study, adapalene 0.1% gel mixed with 10% benzoyl peroxide remained stable with and without light, while tretinoin degraded by more than 50% in about 2 hours and 95% in 24 hours. That stability is why combination products exist: Differin's Epiduo Acne Gel contains 0.1% adapalene and 2.5% benzoyl peroxide and is marketed as FDA-approved for over-the-counter use.

Ways to combine them:

• Split routine: a benzoyl peroxide wash or leave-on in the morning, adapalene at night. Gentler for beginners.
• One combination gel: a single pea-sized layer once daily. More convenient and more drying.
• Short-contact wash: a benzoyl peroxide cleanser left on for a minute before rinsing, then adapalene later.

Benzoyl peroxide bleaches fabric; Differin warns that all products containing it can bleach fabrics, so use white pillowcases and towels. Read more in how to use benzoyl peroxide.

What moisturizer should I use with adapalene?

A plain, fragrance-free, non-comedogenic moisturizer is enough. Differin's routine is simply cleanse, apply the gel, then moisturize. Look for barrier-friendly ingredients such as glycerin, ceramides or panthenol, and skip anything with scrubs, strong acids or added retinol while you adjust. Differin's own guidance for its combination gel says to avoid chemical or physical exfoliants and other retinol products, and to avoid waxing.

If your skin is very dry, you can apply moisturizer before adapalene as a buffer for the first few weeks, then switch to moisturizer after once you're comfortable.

Adapalene vs retinol: what's the difference?

Adapalene is an acne medicine that acts directly on retinoid receptors; retinol is a cosmetic vitamin A that has to be converted in the skin first. A review in Clinical Interventions in Aging explains that retinol must be converted to retinoic acid to work and is about 20 times less potent than tretinoin. Adapalene doesn't need that conversion, and DermNet notes it is selective for certain retinoid receptors.

If your main concern is acne, adapalene is the more targeted choice. If it's texture and early lines with no breakouts, a retinol may be enough; see retinol for beginners. For the prescription step up, read tretinoin explained.

Does adapalene work for anti-aging?

There is some evidence, though less than for tretinoin. In a randomized, vehicle-controlled trial of 83 people with sun damage, adapalene 0.1% or 0.3% used for up to nine months lightened sun spots in more people than vehicle (57% and 59% of patients had brighter spots at 9 months, vs 36% on vehicle) and reduced actinic keratoses, and a retrospective look at photos showed improved wrinkles. The review authors suggest it as a second-line option for people who can't tolerate conventional retinoids, and call for larger trials. Differin's packaging is for acne, so if aging is your main goal, discuss options with a dermatologist.

Can I use adapalene while pregnant or breastfeeding?

Most experts say no during pregnancy. The American Academy of Dermatology lists adapalene with tretinoin and says "most experts recommend stopping this treatment during pregnancy", and also notes that retinoids should not be used during pregnancy. For breastfeeding, MedlinePlus advises using the smallest amount and keeping it off the nipple and areola; talk to your doctor first. Azelaic acid is the option the AAD describes as thought to be safe in pregnancy.

How can a selfie scan help you track adapalene?

Twelve weeks is a long time to judge by memory, especially when weeks two to four look worse. A weekly photo in the same light gives you a fair comparison. Pori takes a selfie and returns an overall skin score with Pores & Texture and Pigmentation & Tone among its breakdowns, and its before/after comparison and progress charts show whether the trend is heading the right way. The skin diary lets you note when you started, when you moved to nightly use, and when you added benzoyl peroxide. Our guide to tracking acne progress covers how to take consistent photos.

An app is not a diagnosis. See a dermatologist for painful nodules, scarring, or acne that hasn't improved after three months of consistent use.