Aphanizomenon Flos-Aquae Extract is derived from a blue-green algae (cyanobacterium) and is used in skincare as an antioxidant and skin-conditioning ingredient rich in proteins, vitamins, and phycobiliproteins. It is promoted for soothing and protective effects against oxidative stress.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation or redness | Rare | Mild localized irritation possible in sensitive individuals. |
Allergic contact dermatitis | Rare | Hypersensitivity reactions are uncommon but possible. |
Microcystin contamination concerns | Very rare | Cyanobacterial sources may carry trace cyanotoxins if not properly sourced/purified; relevant to ingredient quality rather than typical topical use. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.