Good Molecules Hyaluronic Acid Serum Dupes & Cheaper Alternatives
From 50 Reddit threads · Updated October 8, 2026
Simple hyaluronic acid serum for layering and damp-skin hydration; can feel tight. The catch: needs a moisturizer or occlusive on top. Here's what Redditors reach for instead.
The short answer
Best Overall Alternative10% azelaic acid for redness and breakouts · $15.40 · 29.9 ml
Same Active: Hyaluronic AcidDamp-skin hydration that actually plumps · $18.54 · 30 ml
Best for DehydrationBeta-glucan-heavy hydration without much fuss · $15.00 · 50 ml
#1
Best Overall Alternative
- Key actives: Azelaic Acid 10%
- Size: 29.9 ml
- Price per ml: $0.52/ml (original $0.20/ml)
The why
One minus
Can sting or burn on a compromised barrier
Good forSensitive Skin, Combination Skin, Oily Skin
The original, at a glance
- Why people love it
- Layers clean and sinks in fast
- Price
- $5.97 · 29.6 ml · $0.20/ml
#2
Same Active: Hyaluronic Acid
- Key actives: Hyaluronic Acid 2%
- Size: 30 ml
- Price per ml: $0.62/ml (original $0.20/ml)
The why
A hyaluronic acid serum with panthenol and glycerin that people mainly use for dehydration and post-retinoid tightness. Best on damp skin under moisturizer, especially if your barrier is cranky. Dry climates and heavy layering can make it feel sticky or useless.
One minus
Sticky, tacky, and prone to pilling
Good forDry Skin, Sensitive Skin
Both recommended for Dehydration.
“I started using the ordinary hyaluronic acids serum on damp skin.”
— Reddit, r/SkincareAddiction
#3
Best for Dehydration
Beta-Glucan Power Moisture Serum
iUNIK·Serum
See alternativesBeta-glucan-heavy hydration without much fuss
- Size: 50 ml
- Price per ml: $0.30/ml (original $0.20/ml)
The why
A short, water-light humectant serum built around beta-glucan, glycerin, and sodium PCA. People use it under moisturizer on damp skin for dehydration and barrier recovery. Some get stinging, redness, or whiteheads after reformulation.
One minus
Reformulation complaints are constant; many say it is less hydrating now
Good forDry Skin, Sensitive Skin
Both recommended for Dehydration.
“my current serum is the iUnik Beta Glucan Power Moisture Serum.”
— Reddit, r/tretinoin
Other alternatives worth a look
Absorbs fast, no sticky finish · 265 mentions
Combination SkinAlcohol-Free
Centella, panthenol, and ceramide NP do the barrier-support job · 195 mentions
Combination SkinFragrance-Free
Deep hydration on damp skin · 64 mentions
One pump covers the whole face · 29 mentions
HA plus ceramides, glycerin, and panthenol · 16 mentions
CeramidesDimethicone
Watery, fast-absorbing centella · 533 mentions
Combination SkinDewy Finish
Centella-heavy barrier support · 180 mentions
Cream TextureHeavy/Rich
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