7 Signs Your Expensive Hair Serum Is Actually Harming You

2. Scalp Irritation and Itchiness

A healthy scalp is the foundation for healthy hair, and any product that disrupts this balance can be problematic. If your scalp feels itchy or irritated after using a serum, it could be a sign of an allergic reaction or sensitivity to certain chemicals like parabens or sulfates. These compounds can strip the scalp of its natural oils, leading to dryness and irritation. In severe cases, this can even result in dandruff or scalp infections. Paying attention to how your scalp reacts and opting for serums with gentle, natural ingredients can help maintain a healthy scalp environment.