The Best Hydrating Gel Primers

A hyaluronic gel primer is the difference between foundation sitting on skin and sinking into it.

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Primer is the step most likely to be skipped and the one that most changes how foundation looks six hours in. Gel primers with hyaluronic acid hydrate the surface so foundation doesn't cling to dry patches or settle into fine lines.

The trade-off is grip: the most hydrating primers are often the least gripping, so the right pick depends on whether your foundation slides or your skin looks flat.

Our picks

  1. 1
    69
    FairHealth Score 69 out of 100 — Fair
    Most popular

    e.l.f. Power Grip Primer

    The best-selling gel primer on Amazon by a wide margin, and it genuinely grips — but read the panel below before you buy. It contains menthol and peppermint leaf water alongside two synthetic dyes, none of which do anything for your skin and all of which are worth avoiding if you are sensitive. We rank it here because it is the product most people are actually considering, not because it is the cleanest.

    How this scored 69/100
    • Formula transparency25/25

      Full ingredient list published and screened.

    • Restricted substances30/30

      Nothing on the EU banned or restricted lists, and no common contact sensitizers.

    • Fragrance & allergens0/20

      Contains fragrance — a leading cause of contact reactions.

    • Dose disclosure14/25

      Concentration not stated, but ingredient order shows roughly where actives sit.

    What’s in it

    Full ingredient list publishedContains fragrance2 things to know
    • Sodium hyaluronate
    • Niacinamide
    • Sodium ascorbyl phosphate
    • Note: Contains menthol and peppermint leaf water — aromatic irritants with no formulation benefit in a leave-on product, and a common cause of stinging on sensitive skin.
    • Note: Contains Blue 1 (CI 42090) and Yellow 5 (CI 19140). Colourants are cosmetic only; Yellow 5 is a recognised, if uncommon, sensitizer.
    Check price on Amazon
  2. 2
    62
    FairHealth Score 62 out of 100 — Fair
    Best grip

    Milk Makeup Hydro Grip Primer

    The primer that made this category, built on hyaluronic acid and niacinamide rather than silicone slip, so foundation holds without the flat, filled-in look. The trade-off is transparency: we could not retrieve a complete ingredient list to screen, which is what holds its score down rather than anything we found in it.

    How this scored 62/100
    • Formula transparency10/25

      Brand publishes key ingredients but we could not verify the complete list.

    • Restricted substances30/30

      Nothing on the EU banned or restricted lists, and no common contact sensitizers.

    • Fragrance & allergens8/20

      Fragrance status could not be confirmed.

    • Dose disclosure14/25

      Concentration not stated, but ingredient order shows roughly where actives sit.

    What’s in it

    Brand publishes key ingredients onlyFragrance status unconfirmed1 thing to know
    • Hyaluronic acid
    • Niacinamide
    • Blue agave extract
    • Note: We could not retrieve the complete INCI list to screen every component independently.
    Check price on Amazon

What we weighed

Ingredients that matter

Hyaluronic acid
Draws water to the surface. The core of any hydrating primer.
Glycerin
The unglamorous humectant doing much of the actual work.
Peptides
Increasingly added so the primer earns its place as a skincare step too.