Product record / Serums, ectoin
SerumPaula's Choice 7% Ectoin + Hyaluronic Acid Milky Serum
- $23
- retail price
- 7%
- ectoin
- $1.15
- per mL
- Data source
- Ectoin is the #2 ingredient (INCI-verified) at a disclosed 7% — the clinical-study-level dose — with squalane and hyaluronic acid in a milky, silky base; the high-dose pick Literal 'Ectoin' verified genuinely present in the published INCI via INCIDecoder full ingredient list 2026-06-15 (disclosed at 7.0%). ASIN B0GQLSKBVK price PA-API-verified 2026-06-15.
- Best for
- Hydration
- How it feels
- Lightweight, fast-absorbing serum
- Value
- $23 for 20 mL · $1.15/mL
Bottom line The high-dose pick — a disclosed 7% ectoin (the level studied in trials) plus squalane and HA in a milky serum.
Editorial verdict / Social intelligence
The high-dose pick — a disclosed 7% ectoin (the level studied in trials) plus squalane and HA in a milky serum. 1
- Beauty benefit
- A serum built around ectoin at a disclosed 7% — notably, the same kind of concentration used in the clinical eczema studies — sitting at #2 on the INCI just after water, with squalane and hyaluronic acid for cushioned hydration. If you want ectoin at a level that matches the research rather than a token splash, this is the standout.
- Does it work
- Yes, and it's the pick when you specifically want ectoin at a meaningful, study-relevant dose. The 7% delivers ectoin's water-binding hydration and barrier-protection at a level the evidence actually supports, and the squalane/HA base makes it comfortable for dry and sensitive skin. Honest framing: even at 7% ectoin is a supportive hydrator-and-barrier protector, not a retinoid or a brightener — so this buys you a genuinely well-dosed hydration/barrier serum, not a corrective treatment. The milky, slightly silicone-free oil base feels rich, which some love and some find too emollient. See the verified data below →
Consensus strength
StrongEctoine is unusually well-supported for a single cosmetic ingredient: multiple randomized/controlled human atopic-dermatitis trials, a systematic review, and barrier/hydration/surfactant-protection studies show it hydrates and supports the skin barrier with an excellent tolerability profile. The honest qualifier is scope and dose — a supportive hydrator-and-barrier protectant (not a retinoid, brightener or exfoliant), with the clearest benefit from higher (~5.5-7%) levels.
01 / The key active
ectoin at 7%
This product discloses 7% ectoin — ectoin is the #2 ingredient (inci-verified) at a disclosed 7% — the clinical-study-level dose — with squalane and hyaluronic acid in a milky, silky base; the high-dose pick.
Ectoin is the #2 ingredient (INCI-verified) at a disclosed 7% — the clinical-study-level dose — with squalane and hyaluronic acid in a milky, silky base; the high-dose pick. Literal 'Ectoin' verified genuinely present in the published INCI via INCIDecoder full ingredient list 2026-06-15 (disclosed at 7.0%). ASIN B0GQLSKBVK price PA-API-verified 2026-06-15.
Other products with ectoin:
02 / The full ingredient list
Every ingredient, in label order
Exactly as printed, each token matched to the EU CosIng register and flagged where a CIR safety assessment exists. Highlighted rows are the key actives.
| # | Ingredient, as printed | CosIng functions | CIR |
|---|---|---|---|
| 01 | Water (Aqua) | no CosIng function record | — |
| 02 | Ectoin |
| — |
| 03 | Isopentyldiol |
| ✓ reviewed |
| 04 | Triethylhexanoin |
| ✓ reviewed |
| 05 | Diisopropyl Adipate |
| ✓ reviewed |
| 06 | Isoamyl Laurate |
| ✓ reviewed |
| 07 | Dicaprylyl Carbonate |
| ✓ reviewed |
| 08 | Squalane |
| ✓ reviewed |
| 09 | 1,2-Hexanediol |
| ✓ reviewed |
| 10 | Simmondsia Chinensis (Jojoba) Seed Oil |
| ✓ reviewed |
| 11 | Sodium Hyaluronate |
| ✓ reviewed |
| 12 | Caprylic/Capric Triglyceride |
| ✓ reviewed |
| 13 | Tocopherol |
| ✓ reviewed |
| 14 | Glycogen |
| — |
| 15 | Sodium Phytate |
| ✓ reviewed |
| 16 | Citric Acid |
| ✓ reviewed |
16 ingredients as printed · 16 exact CosIng matches · source: ectoin is the #2 ingredient (inci-verified) at a disclosed 7% — the clinical-study-level dose — with squalane and hyaluronic acid in a milky, silky base; the high-dose pick
03 / Where to buy
Where to buy 7% Ectoin + Hyaluronic Acid Milky Serum
Some links on this page earn us a commission. It never changes our analysis — the methodology is public.
04 / What people say
What buyers actually say
What works
-
topical application of ectoine to healthy human skin was shown to improve skin hydration as well as skin barrier function Study
- Common Gentle and protective — backed by real human data and shields skin from cleanser-surfactant stress 31
Ectoine is an effective natural substance with an excellent tolerability and safety profile review
What to know
- Common A supportive hydrator-and-barrier active, not a retinoid or brightener — and the studied benefit came from fairly high doses 34
formulations containing 5.5-7.0% ectoine positively influenced skin dryness and, consequently, pruritus and dermatitis-specific scores in patients with atopic dermatitis review
What you'd only know from the reviews
-
The number that matters here is the disclosed 7%: a lot of 'ectoin' products don't say how much they contain, and many cosmetic serums sit well below the levels used in the clinical studies. This one is dosed where the research is — so if you're choosing an ectoin serum on evidence rather than marketing, the disclosed concentration is the tell. 3
- 1
- 2
- 3
- 4
05 / Questions
Frequently asked
- What's in Paula's Choice 7% Ectoin + Hyaluronic Acid Milky Serum?
- Paula's Choice 7% Ectoin + Hyaluronic Acid Milky Serum lists 16 ingredients. Key active: 7% ectoin. Literal 'Ectoin' verified genuinely present in the published INCI via INCIDecoder full ingredient list 2026-06-15 (disclosed at 7.0%). ASIN B0GQLSKBVK price PA-API-verified 2026-06-15. The full ingredient list, matched to EU CosIng, is on this page.
- Does Paula's Choice 7% Ectoin + Hyaluronic Acid Milky Serum work?
- Yes, and it's the pick when you specifically want ectoin at a meaningful, study-relevant dose. The 7% delivers ectoin's water-binding hydration and barrier-protection at a level the evidence actually supports, and the squalane/HA base makes it comfortable for dry and sensitive skin. Honest framing: even at 7% ectoin is a supportive hydrator-and-barrier protector, not a retinoid or a brightener — so this buys you a genuinely well-dosed hydration/barrier serum, not a corrective treatment. The milky, slightly silicone-free oil base feels rich, which some love and some find too emollient.
- How much ectoin is in Paula's Choice 7% Ectoin + Hyaluronic Acid Milky Serum?
- 7% ectoin. Literal 'Ectoin' verified genuinely present in the published INCI via INCIDecoder full ingredient list 2026-06-15 (disclosed at 7.0%). ASIN B0GQLSKBVK price PA-API-verified 2026-06-15.
- Where can I buy Paula's Choice 7% Ectoin + Hyaluronic Acid Milky Serum?
- $23.00 on Amazon (price recorded as of the date shown). Literal 'Ectoin' verified genuinely present in the published INCI via INCIDecoder full ingredient list 2026-06-15 (disclosed at 7.0%). ASIN B0GQLSKBVK price PA-API-verified 2026-06-15.