Because this is a scalp serum, it is generally used on the scalp skin, not as a conditioner for the hair lengths. Part the hair in sections, apply a small amount where the scalp feels dry or uncomfortable, and distribute gently with fingertips without scratching. Follow the directions on the packaging for the exact amount, frequency and whether it should be rinsed out or left on.
For best comfort, avoid applying it immediately after aggressive scrubbing, strong exfoliating scalp products or chemical services if the skin feels irritated. The formula contains soothing and moisturizing ingredients such as aloe vera juice, glycerin, sodium hyaluronate, panthenol and licorice extract, but it also contains tea tree oil and menthol, which can feel cooling or tingly on sensitive skin.
If your scalp is easily reactive, try it first on a small area and wait to see how your skin feels before applying more widely. Keep the routine simple when introducing it: use a mild shampoo, avoid layering many active scalp products at once, and monitor whether dryness, tightness and itching feel more comfortable over time.