Is this serum good for sensitive skin?

It is formulated for sensitive skin: fragrance-free, hypoallergenic and buffered with Neurosensine and thermal water. Start every other morning if your skin is reactive.

When should I apply it?

Use it in the morning on clean skin before moisturizer and sunscreen. Vitamin C supports antioxidant defense, but it does not replace SPF.

How does it compare with other vitamin C serums?

It uses 12% pure vitamin C rather than a derivative, with salicylic acid added for texture. Reviewers often prefer it over other vitamin C serums they have tried.

Why did my serum crystallise?

Some users report the formula thickening or crystallising after a few uses. Keep the cap tight, store it away from heat and light, and check the product before each use.

Is it fragrance-free?

Yes. It contains no added fragrance and is listed as non-comedogenic and hypoallergenic.

What size is the bottle?

It is a 1 oz. bottle, which lasts roughly two to three months with daily morning use.

Where is the La Roche-Posay Pure Vitamin C12 Serum cheapest?

At Amazon, for $44.99, as of our latest check.

Where can I buy the La Roche-Posay Pure Vitamin C12 Serum?

6 stores we checked sell it, including Loja Glamourosa, cosmetis.com, PerfumesClub.us, Amazon, Cult Beauty.

La Roche-Posay Pure Vitamin C12 Serum

Best price now

$44.99at AmazonObserved at 11:42 AM

Compared across 4 stores. Prices are checked against each store and labelled with when.

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Our take on the La Roche-Posay Pure Vitamin C12 Serum

La Roche-Posay Pure Vitamin C12 Serum is a 1 oz. brightening face serum built around 12% pure vitamin C, with salicylic acid to smooth texture and Neurosensine plus thermal water to calm skin. It is fragrance-free, non-comedogenic and hypoallergenic, aimed at dullness, uneven tone and early wrinkles, including on sensitive skin. The best new price is $13.99 at eBay as of November 5, 2026, with 4 stores listing it new.