Can the effect of Caffeine Shampoo C1 be enhanced, if the patient leaves the shampoo on for longer than 2 minutes?
Leaving the product on for a longer period of time also boosts the caffeine’s effect on the scalp. If the product is left on the scalp for longer than 2 minutes, then the consumer should check his scalp type and scalp condition. Depending on the scalp's sensitivity, leaving the product on excessively long can result in temporary redness.