Carotenoids, studied for UV-related aging
Review2025 reviewCarotenoids (beta-carotene, lycopene, astaxanthin, lutein)Oral and topical routes
The studies gathered describe an effect on UV-related skin aging, through free radical scavenging. The authors also list the points to watch: safe dose, bioavailability, allergies and pigmentation disorders with prolonged use. The review covers the carotenoid family, not a carrot extract2.
Carrot among six plants tested against UV damage
Review2022 scoping reviewTea, blueberry, lemon, carrot, tomato, grape9 studies retained, including 4 in humans and 1 mixed
All the studies retained report favorable effects on UV-induced skin damage. The small number of studies and the variety of plants do not allow the effect of carrot to be isolated3.
Root ferments more antioxidant than extracts
LaboratoryCarrot, celery and parsley rootsExtracts and kombucha fermentsAntioxidants, cytotoxicity, cytokines
The carrot ferments have the highest antioxidant potential: a 55.75% reduction of the ABTS radical and 74.6% of the DPPH radical. Up to 2.5%, most samples were not cytotoxic to skin cells. Lab work on ferments, not on the standard extract4.
Ingested carotenoids color the skin, little studied for this use
Review2026 systematic review68 studies on sunless productsOral carotenoids
Taken orally, carotenoids accumulate in the skin and subcutaneous tissue and give a yellow-orange tint. The authors judge these agents still little studied in humans5.