For most people trying a retinoid for the first time, adapalene 0.1% (Differin Gel) is the practical place to start. You can buy it without a prescription, it tends to irritate less, and in head-to-head trials it worked about as well as low-strength tretinoin. Tretinoin is a prescription retinoid with a longer history and more strengths to choose from. It makes sense when adapalene isn’t doing enough after a fair trial, when a clinician recommends it, or when you also want treatment for sun damage.
Both are topical retinoids: vitamin A–related drugs that help prevent clogged pores (comedones) and calm inflammation. The American Academy of Dermatology’s 2024 acne guideline gives topical retinoids a strong recommendation, the same level it gives benzoyl peroxide. This guide covers how the two differ in practice, and when it’s worth getting a prescription.
Adapalene vs tretinoin at a glance
| Feature | Adapalene 0.1% (Differin Gel) | Tretinoin |
|---|---|---|
| How you get it (U.S.) | Over the counter, ages 12+ (FDA Rx-to-OTC switch, 2016) | Prescription only |
| Common strengths | 0.1% OTC; 0.3% by prescription | Cream 0.025%, 0.05%, 0.1%; gel 0.01%, 0.025%; microsphere gels and other forms |
| FDA-approved uses | Acne | Acne; some products also approved for fine wrinkles from sun damage |
| Irritation (typical) | Usually milder | Often more, especially at higher strengths |
| Stable with benzoyl peroxide and light? | Yes | Standard forms break down; some newer forms are designed to be stable |
| How often | Once a day | Usually once a day, at night |
| Pregnancy | Label: ask a doctor first | Generally avoided; ask a doctor |
How retinoids treat acne
Acne starts when a hair follicle gets plugged with oil and dead skin cells, forming a microcomedo, a clog too small to see. That plug can grow into a blackhead or whitehead, or become inflamed (a red pimple). If you want the full picture, our guide to what causes acne walks through each step.
Retinoids work early in that chain. They normalize how skin cells in the follicle shed, so fewer plugs form, and they have anti-inflammatory effects. That’s why dermatology reviews describe them as a mainstay of acne treatment and why they’re used for maintenance after acne clears. It’s also why they take time: they mostly prevent new lesions rather than shrinking the ones you already have.
Adapalene and tretinoin do this through the same broad receptor family, but adapalene is a synthetic molecule designed to bind more selectively. In practice, the differences that matter to you are irritation, stability and access.
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What the head-to-head evidence shows
The best-known comparison is a meta-analysis of five randomized trials covering 900 people with mild to moderate acne (450 on each drug). It compared adapalene 0.1% gel with tretinoin 0.025% gel. The authors found:
- Similar overall effectiveness: both reduced total lesion counts to a similar degree by the end of the trials.
- A faster early response with adapalene: reductions in inflammatory and total lesions were significantly greater at week 1.
- Better tolerability with adapalene: adapalene was considerably better tolerated on the skin at every evaluation point.
Irritation: the real difference day to day
Both drugs can cause what’s often called retinoid dermatitis: dryness, flaking, redness, stinging or burning, mostly in the first few weeks. The Differin Drug Facts label warns that irritation is more likely in the first few weeks and that acne may look worse before it improves.
Adapalene’s lower irritation in trials is the main reason it’s the usual first choice, especially for sensitive or dry skin. With tretinoin, a clinician will usually start with a low strength or a gentler base (cream rather than gel, or a microsphere gel) and increase slowly.
Ways to reduce irritation with either retinoid:
- Start slowly. Use it every second or third night for the first two weeks, then build up to nightly as your skin allows.
- Use a pea-sized amount for the whole face, spread in a thin layer over the areas where you break out, not dabbed on single spots.
- Apply to dry skin and avoid the corners of the nose, the eyes and the lips.
- Moisturize. A plain, fragrance-free moisturizer before or after helps. See our guide to choosing a moisturizer for acne-prone skin.
- Use sunscreen daily. Retinoids can make skin more sensitive to the sun. Our sunscreen guide for acne-prone skin covers formulas that are less likely to feel heavy.
- Don’t stack irritants at the start, such as scrubs, strong acids or a high-strength benzoyl peroxide.
Stability: benzoyl peroxide, light and timing
This is a practical difference many people miss. In a lab study, most tretinoin in a standard gel broke down within hours when mixed with benzoyl peroxide under light, and tretinoin also degraded with light alone. Adapalene stayed stable under the same conditions. That stability is why adapalene and benzoyl peroxide can be combined in a single gel. Epiduo was a prescription product for years; since May 2026 the adapalene 0.1%/benzoyl peroxide 2.5% gel is also FDA-approved for over-the-counter sale as Differin Epiduo Acne Gel.
What that means for your routine:
- With adapalene, you can use benzoyl peroxide in the same routine. Many people use a benzoyl peroxide wash in the morning and adapalene at night.
- With standard tretinoin, apply it at night and keep benzoyl peroxide for the morning, unless your prescriber gives you a product formulated to be used with it.
Not sure whether two products clash? Paste their ingredient lists into our free ingredient conflict checker, which flags retinoid and benzoyl peroxide timing issues and explains each flag. Our guides to using tretinoin with benzoyl peroxide and adapalene with benzoyl peroxide explain why the two retinoids need different timing.
Access and cost
Adapalene 0.1% has been sold over the counter since the FDA approved Differin Gel for nonprescription use in July 2016, for people 12 and older. It was approved through a new drug application (an Rx-to-OTC switch), not through the OTC acne monograph that covers benzoyl peroxide and salicylic acid. Store brands and other brands, such as La Roche-Posay’s Effaclar Adapalene Gel, also sell 0.1% adapalene.
Differin (Galderma)
Differin Adapalene Gel 0.1% Acne Treatment
- Active ingredient
- Adapalene 0.1%
- Size
- 15 g tube (the brand calls it a 30-day supply); 45 g also sold
- May suit
- A first retinoid for blackheads, whiteheads and mild to moderate pimples
Why it's here
- The original OTC adapalene, approved by the FDA for nonprescription use in 2016
- Stable alongside benzoyl peroxide, so it fits a simple AM/PM routine
Things to know
- Dryness, redness and peeling are common in the first few weeks
- The label says results may take up to 3 months, and acne may look worse early on
- Label: ask a doctor before use if pregnant or breastfeeding
For a full walk-through of how to start it, what the first 12 weeks usually look like and how to handle a flare, see our adapalene (Differin) gel guide.
Tretinoin needs a prescription. You can get one from your primary care clinician, a dermatologist, or, for adults, an online acne service. Generic tretinoin is widely available, but what you pay depends on your insurance, the formulation and the pharmacy, so we don’t quote prices here.
If you’re an adult without any of the exceptions above, our comparison of online acne treatment services explains which services prescribe tretinoin and what they charge.
Which should you choose?
Start with adapalene 0.1% if:
- You’ve never used a retinoid, or you have sensitive or dry skin.
- Your acne is mainly blackheads, whiteheads and scattered pimples.
- You want to combine it with an over-the-counter benzoyl peroxide product.
- You’d rather not pay for a clinician visit yet.
Ask about tretinoin (or another prescription retinoid) if:
- You’ve used adapalene consistently for about 12 weeks and still have active acne.
- Your skin tolerates adapalene well and you and your clinician want to step up.
- You also want treatment for sun damage and fine lines, which some tretinoin products are approved for.
- A clinician suggests a combination product, such as a retinoid with benzoyl peroxide or an antibiotic.
See a dermatologist in person rather than self-treating if you have deep, painful nodules or cysts, acne that’s leaving scars or dark marks, sudden adult acne with irregular periods or excess hair growth, or if you’re pregnant or under 18. These situations call for a proper examination. Our free acne treatment quiz can help you work out which route fits.
Using a retinoid with other treatments
Retinoids work best as part of a routine that targets more than one cause of acne. The 2024 AAD guideline supports combining treatments that work in different ways. Common pairings:
- Retinoid + benzoyl peroxide: the classic combination. Benzoyl peroxide targets acne bacteria and inflammation, while the retinoid prevents clogs. If you’re choosing a benzoyl peroxide product, our guide to benzoyl peroxide strengths explains why 2.5% to 5% is usually enough on the face.
- Retinoid + azelaic acid: helpful when dark marks after pimples (post-inflammatory hyperpigmentation) are a concern. See azelaic acid for acne.
- Retinoid + a gentle cleanser: a mild wash, or a salicylic acid cleanser if your skin tolerates it, without adding more leave-on acids.
Avoid using adapalene and tretinoin together; there’s no benefit and more irritation.
Pregnancy, breastfeeding and teens
- Pregnancy and breastfeeding: the Differin Drug Facts label says to ask a doctor before use if you’re pregnant or breastfeeding. Retinoids as a group are generally avoided in pregnancy, and one prescription retinoid (tazarotene) is specifically contraindicated. Talk to your clinician about alternatives.
- Teens: adapalene 0.1% is approved OTC for ages 12 and up. We still suggest involving a parent and a pediatrician or dermatologist, especially if acne is inflamed or leaving marks.
- Isotretinoin is different. It’s an oral retinoid for severe acne that can only be prescribed under a strict FDA safety program. Nothing in this article applies to it.
The bottom line
Adapalene 0.1% and tretinoin are both proven acne treatments. Adapalene is the easier first step: it’s available without a prescription, it’s gentler, it works with benzoyl peroxide and it performed about as well as low-strength tretinoin in trials. Tretinoin is a sensible prescription step up if adapalene isn’t enough after about three months. Whichever you use, apply a thin layer once a day, protect your skin barrier, wear sunscreen, and give it time.