What it is
This ingredient is obtained from the seeds of grapefruit (Citrus paradisi) and contains flavonoids and other polyphenolic compounds. It is added to formulas as a supporting botanical for its conditioning and antioxidant character. In sunscreens it appears at low levels and is not a measured sun filter.
Safety & warnings
Grapefruit seed extract is generally well tolerated on skin, though some commercial grades have historically been noted for added preservative carriers; on-label this material is the plant extract itself. Citrus-derived components can cause sensitivity in fragrance-reactive individuals.
Origin & sourcing
Natural; derived from grapefruit seeds (Citrus paradisi), typically by solvent extraction of the ground seed material.
Questions everyone asks
What part of the grapefruit is used?
The seeds, which are processed into an extract rich in flavonoids and other polyphenols.
Does it work as a sunscreen ingredient?
No. It serves as a conditioning, antioxidant botanical and provides no measured UV protection.