Hypnea Musciformis (Algae) Extract

HYP

8/10

Concern level

High concern

Red algae extract from Hypnea musciformis used primarily as a skin-protective, hydrating, and soothing cosmetic ingredient. It is typically rich in sulfated polysaccharides, minerals, and antioxidant compounds, and is most often used to support a moisturized, comfortable skin feel rather than as a stand-alone active. ([incidecoder.com](https://incidecoder.com/ingredients/hypnea-musciformis-extract?utm_source=openai))

Pore-clogging

Non-comedogenic

Pregnancy

Safe

Regulatory

No data

Benefits

MoisturizingSoothingSupports Barrier Function

Chemical Properties

pH Range

4.00 - 8.00

Typical Concentration

0.10% - 5.00%

CAS Number: 223751-71-1

Skin Type Compatibility

dry skin9/10

oily skin7/10

sensitive skin8/10

acne prone7/10

mature skin8/10

normal skin9/10

Interactions

incompatible with: No well-established direct incompatibilities are documented for topical cosmetic use., Use extra caution in formulas with strong irritants or high-alcohol systems if formulating for sensitive skin.

Risks & Warnings

Generally low-risk in finished cosmetics, but as a botanical extract it can still pose occasional sensitivity risk. Main practical concerns are batch variability, potential contamination/impurities in poorly controlled seaweed sourcing, and rare irritation in very reactive skin. No specific pregnancy contraindication is established for topical cosmetic use. ([cir-safety.org](https://www.cir-safety.org/sites/default/files/QRT-Update-Dec2025.pdf))

Vegan Cruelty-Free