Glossary

Emollient

Written by Reviewed by the SYNC editorial team Published Last reviewed Editorial standards

Emollient — an ingredient that softens and smooths the skin by filling in gaps between skin cells on the surface. Emollients improve texture and flexibility, leaving skin feeling supple and helping it look more even.

Key points

  • Emollients settle into spaces between corneocytes, smoothing rough or flaky areas and improving the skin's feel.
  • Common emollients include plant oils, fatty acids, fatty alcohols, squalane, and esters like caprylic/capric triglyceride.
  • They contribute to a soft, conditioned finish and can improve the overall spreadability and sensory feel of a product.
  • Many emollients also offer mild occlusive properties, providing some help with reducing water loss.

Frequently asked

What is the difference between an emollient and a humectant?

An emollient softens and smooths the skin surface, while a humectant attracts and binds water to hydrate. Many moisturizers combine both for a fuller effect.

Can emollients clog pores?

Some richer emollient oils and butters may be comedogenic for acne-prone skin, though this varies by ingredient and individual. Lighter emollients like squalane are often better tolerated.

Related topics

This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.

Encyclopedia

Further reading

This entry was written and checked against the sources below. They are published by clinical and scientific bodies, they are listed most readable first, and each one opens in a new tab. They are background for the whole entry rather than footnotes to individual sentences.

  1. Emollients and Moisturizers (Moisturisers) DermNet NZ Clinical guidance dermnetnz.org
  2. Moisturizers StatPearls (NCBI Bookshelf) Reference text ncbi.nlm.nih.gov
  3. Moisturizers: The Slippery Road PubMed Central Peer-reviewed, open access pmc.ncbi.nlm.nih.gov
  4. Moisturizer in Patients with Inflammatory Skin Diseases PubMed Central Peer-reviewed, open access pmc.ncbi.nlm.nih.gov
  5. Role of topical emollients and moisturizers in the treatment of dry skin barrier disorders PubMed Peer-reviewed (abstract) pubmed.ncbi.nlm.nih.gov
  6. The Skin Barrier and Moisturization: Function, Disruption, and Mechanisms of Repair PubMed Peer-reviewed (abstract) pubmed.ncbi.nlm.nih.gov

SYNC does not publish medical advice. Nothing here replaces a consultation with a doctor or a pharmacist about your own skin.