7 Signs Your Expensive Hair Serum Is Actually Harming You

6. Allergic Reactions

Allergic reactions to hair serums can manifest in various ways, from mild itching to severe dermatitis. Fragrances, preservatives, and other synthetic additives are common culprits. These reactions can be particularly concerning if they spread beyond the scalp to the face or neck. If you experience redness, swelling, or a rash after using a serum, it's crucial to discontinue use immediately and consult a dermatologist. Switching to hypoallergenic or fragrance-free products can help minimize the risk of adverse reactions and ensure your hair care routine is safe.