A barrier moisturizer in Amazon's top ten: what ceramides and niacinamide do together, and the SPF question

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Researched. We have not used this one long enough to give you a verdict, and we would rather say so than invent one. What follows is how it works, who it suits, and what it will not do. When we have used it properly, this page carries the verdict and the date.

La Roche-Posay Toleriane Double Repair Moisturizer

Most of Amazon's top beauty sellers this week are trend products. This one is the opposite. It is not exciting, and that is the point: it is a fragrance-free, barrier-supporting cream that suits almost everyone, which is what most people actually need.

What is in it

According to the listing: La Roche-Posay's prebiotic thermal water, ceramide-3, niacinamide and glycerin, for up to 48 hours of hydration and to restore the skin's natural protective barrier. It is described as fragrance-free, paraben-free, oil-free and alcohol-free, and dermatologist-tested for all skin types, including sensitive.

Why ceramides and niacinamide work together

Ceramides are part of the fats that hold the skin's outer layer together and keep water in. Putting them back helps a dry or irritated barrier recover; we covered the barrier in a ceramide cream for a barrier that has had enough.

Niacinamide supports that barrier too, and is one of the best-tolerated ingredients there is, with a reputation for helping with redness and uneven tone; see niacinamide: what the percentage means.

Glycerin draws water into the skin. Together, they make a moisturizer that hydrates, repairs and asks very little of sensitive skin.

The SPF question

Toleriane Double Repair comes in more than one version, including a "UV" version with broad-spectrum sun protection, and this listing describes the UV version in places. Before you buy, check which one you are adding to your basket.

If you want it to be your sunscreen, choose the UV version and check the box says "Broad Spectrum". Then use enough — around a quarter of a teaspoon for face and neck — which is more than most people use of a moisturizer. If you already wear a separate sunscreen, the plain version is the one to get. We explain why the amount matters in what SPF measures.

Who it suits

Almost anyone who wants one dependable moisturizer: sensitive, dry, combination and normal skin, skin recovering from too many active ingredients, and anyone pairing it with a retinoid. Very dry skin may want a richer cream on top in winter.

How to use it

Morning and night, after cleansing and any serums. It pairs naturally with a gentle, fragrance-free cleanser for a routine with as little in it to react to as possible.

What it will not do

It will not do what a retinoid or a vitamin C serum does. It will not protect from the sun unless you buy the UV version and use enough. And it will not feel rich enough for everyone on the driest winter days.

The product

A fragrance-free ceramide and niacinamide moisturizer near the top of Amazon's beauty best sellers, sold by Amazon when we checked.

The one people are searching for is the La Roche-Posay Toleriane Double Repair Face Moisturizer.

La Roche-Posay Toleriane Double Repair Moisturizer

We do not print prices here, because a price we typed last month is a price that is wrong today.

Written by JamieG in Garner Town, Tennessee.