The product description states that the red pepper extract is included to provide a warming, stimulating effect on the scalp. This is intended to encourage local microcirculation, which may make your scalp feel more active and refreshed during a mask-style treatment. You can expect a noticeable warming sensation, similar to many heat-activated treatments used in cosmetic rituals.
However, the same description strongly cautions that this extract can feel quite intense on sensitive skin. It is wise to start with a small amount and pay close attention to your scalp's reaction. Avoid using it on irritated or damaged skin, be extra cautious to keep it away from your eyes, and consider performing a patch test first if you are prone to sensitivity. This product is not intended to treat any medical condition; its purpose is to provide a sensory, refreshing experience as part of your hair care routine.