Product

AmLactin Daily Nourish Lotion 12%

12% ammonium lactate — the same active, at the same strength, that needs a prescription when it is called Lac-Hydrin.

At a Glance

Recommended

Ammonium lactate does two jobs at once. It is a humectant that pulls water into the skin, and it is an alpha hydroxy acid that loosens the bonds between dead skin cells so they shed.

For keratosis pilaris — the rough bumps on arms and thighs — keratolytics like this are the mainstay of treatment. They are not a cure, but they are the thing that actually works. The bumps return when you stop.

At 12%, this is the same active at the same strength as Lac-Hydrin, a prescription drug — but sold as a cosmetic off the shelf. That also means there is no FDA review of whether it works, and the product will not treat or cure eczema, psoriasis or rosacea.

Key facts

Key active	Ammonium lactate 12%
Texture	Lotion
Best for	Very dry, rough, bumpy skin; keratosis pilaris
Approximate price	$13–$18
Fragrance	Fragrance free

How it works

This is one of the genuinely effective body products in this whole category, and it works because it is an exfoliating acid, not just a moisturizer.

Ammonium lactate does two jobs at once. It is a humectant — it pulls water into skin. And it is an alpha hydroxy acid, so it loosens the bonds between dead skin cells and lets them shed.

For keratosis pilaris — the rough "chicken skin" bumps on arms and thighs — keratolytics like this are the mainstay of treatment. Not a cure, but the thing that actually works.

And here is the fact worth knowing: at 12%, this is the same active at the same strength as Lac-Hydrin — a prescription drug. You are buying it off a shelf.

Note the name change. AmLactin renamed this from "Daily Moisturizing Lotion" to "Daily Nourish Lotion 12%." Same product.

Everyday habits

How to use it

When: Once a day on rough, dry or bumpy body skin. Nighttime works well.How much: A thin layer over the area. How: Smooth onto clean, dry skin. This is a body product; it is not meant for the face. Watch out: It can sting on freshly shaved or broken skin, and AmLactin advises avoiding open or cracked skin. AHAs make skin burn more easily, so use sunscreen during the day and for about a week after you stop.

Who should be careful+

The prescription comparison cuts both ways, and this is the honest catch. Lac-Hydrin 12% is an FDA-approved drug, reviewed for safety and effectiveness. AmLactin sells the same molecule at the same strength as a cosmetic — no Drug Facts panel, no FDA efficacy review. Same active, two completely different regulatory worlds.

It makes you burn more easily — and the label says for longer than you think. The alpha hydroxy acid warning tells you to use sunscreen and protective clothing while using it "and for a week afterwards." Almost nobody reads that far.

It stings on broken skin, and AmLactin says so. Their own guidance is to avoid open or cracked skin — and their own FAQ says it "will not treat or cure" eczema, psoriasis or rosacea.

Keratosis pilaris comes back when you stop. This manages it. It does not cure it, and no one has anything that does.

The cosmetic safety panel's own guideline for AHAs is 10% or below. AmLactin sells 12% and 15%.

Questions people ask+

What is it best for?Keratosis pilaris and rough, dry, bumpy skin.

Is it really the same as a prescription product?At 12%, it is the same active at the same strength as Lac-Hydrin, but sold as a cosmetic.

Can I use it on my face?No. It is a body strength.

Will it sting?It can on freshly shaved or broken skin. Avoid open or cracked areas.

Does it cure keratosis pilaris?No. It manages it, and the bumps come back when you stop.

Full ingredient list+

Water, Ammonium Lactate, Mineral Oil, Glycerin, Cetearyl Alcohol, Dimethicone, Glyceryl Stearate SE, Steareth-2, Stearyl Alcohol, Xanthan Gum, Phenoxyethanol, Ethylhexylglycerin

References+

1. Lac-Hydrin (ammonium lactate) Lotion, 12% - Prescription Drug Label (DailyMed, U.S. National Library of Medicine) (https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=3d94a218-ae4d-4158-bd8e-92743c7c8e0d) — Confirms Lac-Hydrin is a HUMAN PRESCRIPTION drug containing 12% lactic acid neutralized as ammonium lactate, and its Clinical Pharmacology states lactic acid is an alpha-hydroxy acid that may act as a humectant to hydrate the stratum corneum and may decrease corneocyte cohesion (loosening dead cells) — backing the mechanism claim and the 'same active at same strength as prescription Lac-Hydrin' claim. 2. Keratosis pilaris: a systematic review of the literature and strategies for optimal treatment (European Journal of Dermatology, 2025) (https://pubmed.ncbi.nlm.nih.gov/41277649/) — Systematic review of keratosis pilaris treatment finding that lactic and glycolic acids (keratolytic topicals) are the preferred, efficacious topical treatments — supporting the claim that keratolytic acids like ammonium lactate are the mainstay for keratosis pilaris. 3. AmLactin Daily Nourish Lotion with 12% Lactic Acid (official AmLactin product page) (https://amlactin.com/products/daily-nourish-lotion-with-12-lactic-acid) — Manufacturer page confirming the product contains 12% lactic acid (AHA) that is pH-balanced and described as exfoliating (no-scrub) while deeply hydrating — supporting the product-specific formulation and dual exfoliant/humectant claims.