What it is
Rehmannia Glutinosa Root Extract is derived from the root of Rehmannia glutinosa, a herb with a long history in traditional East Asian medicine. In sunscreens and skincare it is used as a botanical conditioning and soothing ingredient, typically at low supporting levels. It contributes to the conditioning character of a formula and is not a functional active.
Safety & warnings
Generally well tolerated at the low levels used for botanical extracts. Sensitization is uncommon but possible in predisposed individuals. It is not associated with notable comedogenicity at usage levels.
Origin & sourcing
Natural, derived from the root of Rehmannia glutinosa, a plant in the Orobanchaceae family long cultivated in East Asia.
Questions everyone asks
What does this extract do in a sunscreen?
It serves as a conditioning, soothing-associated botanical and does not contribute UV protection.
Why is it common in Asian skincare?
Rehmannia has a long history in East Asian herbal tradition, which is reflected in its use as a botanical ingredient in regional cosmetics.