Ingredients

Chlorella and Algae Extracts

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

Chlorella and Algae Extracts — ingredients derived from freshwater and marine algae, including chlorella, a green microalga rich in naturally occurring compounds. In skincare they are used mainly as conditioning and antioxidant-associated ingredients, often valued for their content of vitamins, minerals, amino acids, and other plant-derived substances.

Key points

  • Chlorella is a single-celled green microalga, while algae extracts broadly cover a range of marine and freshwater species.
  • These extracts are used in cosmetics for skin-conditioning benefits and are often associated with antioxidant-rich plant compounds.
  • Algae-derived ingredients can contribute hydration support and a soothing feel depending on the species and formulation.
  • They are popular in clean and marine-inspired formulas but vary widely in composition depending on their source.

Frequently asked

What does chlorella do in skincare?

Chlorella extract is primarily used as a skin-conditioning ingredient and is associated with naturally occurring vitamins, amino acids, and antioxidants. Its specific effects depend on how it is processed and formulated.

Are algae extracts good for sensitive skin?

Many algae extracts are used for their soothing and hydrating qualities and are generally well tolerated. Because composition varies by species, patch testing a new product is still a good idea.

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. Safety Assessment of Brown Algae-Derived Ingredients as Used in Cosmetics Cosmetic Ingredient Review Regulatory and safety cir-safety.org
  2. Algae a Potential Source in Cosmetics: Current Status, Challenges, and Economic Implications PubMed Central Peer-reviewed, open access pmc.ncbi.nlm.nih.gov
  3. Applying Seaweed Compounds in Cosmetics, Cosmeceuticals and Nutricosmetics PubMed Central Peer-reviewed, open access pmc.ncbi.nlm.nih.gov
  4. Algae Metabolites in Cosmeceutical: An Overview of Current Applications and Challenges PubMed Peer-reviewed (abstract) pubmed.ncbi.nlm.nih.gov
  5. Beneficial Effects of Marine Algae-Derived Carbohydrates for Skin Health 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.