Milk thistle is a type of flowering herb that is native to Mediterranean regions. Regarding its ingestion, it is generally deemed safe to take. Studies that considered its usefulness at significantly higher doses and more extended testing periods only reported a percentage of participants who experienced mild, short-lived side effects.
Nonetheless, a study that looked at the topical benefits of milk thistle reported improved skin conditions. In another laboratory study, its antioxidant properties were said to have had an anti-aging effect on human skin cells in the forms of wrinkles, age spots and works to help slow the aging process and even maintain healthy, youthful skin