Glyceryl Stearate vs Mayu (Horse Oil): which Korean skincare ingredient?
⏱ 1 min read
⚡ Quick answer: Glyceryl Stearate vs Mayu (Horse Oil): Glyceryl Stearate leans toward dryness & dehydration, while Mayu (Horse Oil) targets dryness & dehydration. Can you use both? Yes — they layer well together.
Glyceryl Stearate vs Mayu (Horse Oil): Glyceryl Stearate leans toward dryness & dehydration, while Mayu (Horse Oil) targets dryness & dehydration. Can you use both? Yes — they layer well together.
| Glyceryl Stearate | Mayu (Horse Oil) | |
|---|---|---|
| What it is | An emulsifier built from glycerin and a fatty acid, and one of the most common ways a Korean emulsion gets its texture. It is structural rather than active: no emulsifier, no lotion, just an oily layer floating on water. It also happens to feel softening on skin, which is a useful bonus. | 마유 (mayu) is rendered horse fat, a Jeju souvenir-shop staple and a genuine folk remedy for chapped winter skin. Its fatty acid mix is unusually similar to human sebum, which is the usual explanation for why it absorbs so well. That similarity is documented; the leaping claims about regeneration are not. Not for vegans, obviously. |
| Best for | Dryness & dehydration, Damaged moisture barrier | Dryness & dehydration, Damaged moisture barrier, Flaking & peeling |
| When to use | BOTH | PM |
Which should you choose?
Choose Glyceryl Stearate if your priority is Dryness & dehydration; choose Mayu (Horse Oil) for Dryness & dehydration. Many Korean routines use both — yes — they layer well together.
Glyceryl Stearate guide →Mayu (Horse Oil) guide →
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✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed: 2026-08-23.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.