Verified Beauty Data

Dupe report Nº 023 / Adapalene 0.1% gels

La Roche-Posay Effaclar Adapalene Gel dupes, ranked by formula match

Adapalene 0.1% is an FDA-fixed drug concentration. Differin discloses the identical number for $16 less.

Some links earn us a commission. It never changes the verdict — the methodology is public.

02 / The scoreboard

3 formulas, one number that matter

Read the actives column first — it is the apples-to-apples comparison. $ per gram of active is what the working ingredients cost you; the base-formula score is supporting evidence, not the verdict.

Product Actives vs original $ / g of active Price Base formula Verdict
La Roche-Posay Effaclar Adapalene Gel 0.1% Adapalene 0.1% disclosed on the FDA OTC Drug Facts panel $888.67 $39.99 45 mL 100% the reference The original
Exact disclosed active the direct clones — same actives, same percentages
Differin Adapalene Gel 0.1% Adapalene 0.1% disclosed on the FDA OTC Drug Facts panel $532.67 $23.97 45 mL 95% highest measured The winner Amazon →
Acne Free Adapalene Gel 0.1% Adapalene 0.1% disclosed on the FDA OTC Drug Facts panel $572.67 $8.59 15 mL 95% Best budget Amazon →

✓ same % as original ≠ different % ? in formula, % undisclosed — not in formula

03 / The original

Why the original is the original

Adapalene 0.1% is an FDA over-the-counter monograph drug — the active and its exact concentration are fixed by federal regulation, not chosen by any one brand. That means La Roche-Posay's Effaclar Adapalene Gel, Differin, and Acne Free all disclose the identical 0.1% adapalene on their own Drug Facts panels. There is no "weaker" or "stronger" adapalene gel here; it is the same drug, at the same legal concentration, in three different tubes.

So the entire comparison comes down to price per gram of that active — and the cheapest sticker price is not automatically the best deal. Differin's 45 g tube works out to $532.6667 per gram of adapalene; Acne Free's $8.59 sticker looks like the bargain, but its tube is a third the size, which actually puts it at $572.6667 per gram — more expensive per gram than Differin, not less. La Roche-Posay's derm-pharmacy base costs the most of the three at $888.6667 per gram for the identical active.

If you want the cheapest way to use 0.1% adapalene over the months it takes to actually clear acne, do the per-gram math, not the sticker-price math — Differin wins on that basis. If you just want to try adapalene for the smallest amount of money upfront, Acne Free's $8.59 tube gets you there, you'll just replace it sooner. La Roche-Posay's premium buys its own base and packaging, not a different drug.

04 / The candidates

Every candidate, examined

01 / Differin

The winner
$532.67 per g of active
$23.97 retail · 45 mL
95% base formula · highest of 6

Differin Adapalene Gel 0.1%

Shared formula DNA 0 of 2 original ingredients present
Adapalene (0.1% active ingredient)

shared with original not shared rare marker — weighs more in the score

What matches
Discloses the identical 0.1% adapalene — the FDA OTC monograph fixes this concentration, so every brand's tube contains the same drug at the same strength. Differin is the original adapalene brand the monograph was built around.
What differs
A bigger 45 g tube than Acne Free's 15 g — which is exactly why Differin, not Acne Free, is the cheapest per gram of active ($532.67/g) despite Acne Free's lower sticker price.
Who it's for
The winner — the honest long-run value pick. $23.97 versus $39.99 for the identical 0.1% adapalene, and the lowest cost per gram of the three once you account for tube size.
Ships in
Packaging not verified No brand or retailer statement on the bottle — we won’t guess.
pH
pH not published L-ascorbic acid needs pH below 3.5 to absorb
Data source
Adapalene 0.1% disclosed on the FDA OTC Drug Facts panel Adapalene is fixed by the FDA OTC monograph at 0.1%; disclosed on the Drug Facts panel. ASIN B0H2F8XYC9 price + 45.0 mL size verified from the verifiedbeautydata products.json record (PA-API/label-verified).

$23.97 for 45 mL → $532.67 per gram of active — 1.7× cheaper per active gram than the original's $888.67.

Buy on Amazon $23.97

02 / Acne Free

Best budget
$572.67 per g of active
$8.59 retail · 15 mL
95% base formula · 2nd of 6

Acne Free Adapalene Gel 0.1%

Shared formula DNA 0 of 2 original ingredients present
Adapalene (0.1% active ingredient)

shared with original not shared rare marker — weighs more in the score

What matches
Also discloses the identical 0.1% adapalene on its own Drug Facts panel — same FDA-fixed drug, same strength, at the lowest sticker price on this page ($8.59).
What differs
A smaller 15 g tube — a third the size of Differin's 45 g — which means its per-gram cost ($572.67/g) is actually higher than Differin's, not lower. The lowest price tag is not the lowest long-run cost here.
Who it's for
The best-budget pick if the smallest possible upfront cost is what matters — $8.59 to try 0.1% adapalene. If you already know you'll use it for months, Differin's bigger tube is the cheaper way to buy the same drug.
Ships in
Packaging not verified No brand or retailer statement on the bottle — we won’t guess.
pH
pH not published L-ascorbic acid needs pH below 3.5 to absorb
Data source
Adapalene 0.1% disclosed on the FDA OTC Drug Facts panel Adapalene is fixed by the FDA OTC monograph at 0.1%; disclosed on the Drug Facts panel. ASIN B07V6N5LYK price + 15.0 mL size verified from the verifiedbeautydata products.json record (PA-API/label-verified).

$8.59 for 15 mL → $572.67 per gram of active — 1.6× cheaper per active gram than the original's $888.67.

Buy on Amazon $8.59

05 / Methodology

How we verified this

Verified 2026-06-15

Every formula on this page was tokenized — split into its individual INCI ingredients — and matched against the EU CosIng ingredient database, so "Aqua," "Water," and "Eau" all resolve to the same ingredient.

The base-formula match score works like this: sharing a rare ingredient counts far more than sharing a common one. Almost every serum contains water and glycerin — that proves nothing. Almost nothing contains Ethoxydiglycol or Laureth-23, so when a candidate shares those with the original, it says something real about how the formula was built. (For the statisticians: it is an IDF-weighted Jaccard similarity over the normalized ingredient lists.)

Scores are computed, not opinions. The verdict tags are our editorial read of the actives, the scores, and the prices — and the methodology stays public so you can disagree with us precisely.

Where the ingredient lists come from

  1. Adapalene 0.1% disclosed on the FDA OTC Drug Facts panel

Sources for this report

  • FDA OTC Drug Facts panels — adapalene 0.1% is a fixed monograph concentration
  • Amazon Creators PA-API — ASIN/price verification
  • verifiedbeautydata products.json verified records

06 / Questions

Frequently asked

What is the best La Roche-Posay Effaclar Adapalene Gel dupe?
Differin ($23.97) is the honest winner. Adapalene 0.1% is an FDA OTC monograph drug — the concentration is legally fixed, so La Roche-Posay, Differin, and Acne Free all disclose the identical 0.1% on their own Drug Facts panels. Differin's 45 g tube works out to $532.67 per gram of active — the cheapest of the three once you account for tube size, even though Acne Free has the lower sticker price.
Is Differin the same as La Roche-Posay Effaclar Adapalene Gel?
On the active, yes — both disclose the identical 0.1% adapalene, a concentration fixed by FDA regulation, not chosen by either brand. The difference is the base: La Roche-Posay's derm-pharmacy formula costs $888.67 per gram of that active, versus Differin's $532.67. You are paying for the base and packaging, not a different drug.
Is Acne Free Adapalene Gel cheaper than Differin per use?
Its sticker price is lower ($8.59 versus $23.97), but its tube is a third the size (15 g versus Differin's 45 g). Per gram of the 0.1% adapalene active, Acne Free actually costs $572.67/g — more than Differin's $532.67/g. Acne Free is the lower-upfront-cost option; Differin is the lower long-run cost.

→ / Related

Dig into the ingredients