First Aid Beauty

Ultra Repair Hyaluronic Acid Serum

SerumMid-rangeMorning or evening
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A multi-weight hyaluronic acid serum with colloidal oatmeal and ceramide support for sensitive, dehydrated skin. A soothing, fragrance-free hydrator that pairs hydration with barrier comfort.

What this is good for

✓ Great forDehydrationSensitivityDamaged Barrier

Ingredient stack

Each ingredient is listed in descending concentration. Above the 1% line the order is regulated — below it, brands can list in any order.

Ingredients above the dashed gold line are dosed above 1% (the regulatory threshold) — these are what the formulation is really built on. Percentages are positional estimates from INCI order unless a brand discloses them.

~50–80%Aqua
~5–25%Glycerin
~3–10%Sodium Hyaluron…
~2–6%Hydrolyzed Hyal…
~1.5–4%Avena Sativa Ke…
~1–2%2 ingredients
≤ 1% each3 more ingredients below 1%
position-estimated %1% regulatory line

What's actually doing the work

Hyaluronic Acid
Multi-Weight HA
Acid
A humectant that binds water in the upper skin layers for immediate plumping and hydration. Multi-weight forms reach different depths. Apply to damp skin and seal with moisturiser, especially in dry climates.
Colloidal Oat
Avena Sativa
Botanical
A key active in this formula. See the glossary for the full breakdown of how Colloidal Oat works, the evidence behind it, and how to use it.
Ceramides
Ceramide NP
Lipid
Barrier lipids that make up much of the stratum corneum's protective matrix. Replenishing them reduces water loss and reinforces resilience — central to barrier repair and to calming dry, reactive skin.

Routine placement

Morning or evening

Looking for a dupe?

The closest active-matched alternative is the CeraVe Skin Renewing Vitamin C Serum (10% Pure) (77% active overlap). We found 6 options that share this product’s hero actives.

Dupe guide
See all serum dupes for this product
Ranked by ingredient overlap, with an honest note on what’s different in each.

Similar on the shelf

Put this in context

Skin Stacker is independent and receives no payment from any brand. Ingredient analysis is based on publicly disclosed INCI lists and the peer-reviewed literature. Percentages are positional estimates from INCI order unless a brand discloses them. Formulations change — always re-check the label on your specific batch before using.