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St. John’s Wort (Hypericum perforatum) is a medicinal plant traditionally valued for its anti-inflammatory and calming properties. This plant contains active compounds such as hypericin and hyperforin, which support its therapeutic effects. In hair care, St. John’s Wort can help soothe irritated scalps and potentially promote hair growth by improving scalp health and stimulating circulation.
One notable effect of St. John’s wort is the increased sensitivity of the skin to light, which is due to hypericin. This substance can make skin cells more sensitive to UV light, which increases the risk of sunburn and other skin damage. Due to this photosensitization, St. John’s wort is a contraindication for laser hair removal. The intense beam of light used in this method can lead to side effects such as burns, hyperpigmentation and more severe skin irritation in photosensitive skin.
