The recommended instructions on the product say ‘In the morning and after every hair wash, use the dosage tip to directly apply product to towel-dried scalp and massage in’.

Can Alpecin Caffeine Liquid also be used on dry hair or is it absolutely necessary to wash the hair before application?

Alpecin Caffeine Liquid can also be used on dry hair. It is important that the liquid is applied directly to the scalp with the dosage tip and that it is massaged in. Since the liquid penetrates the scalp quickly, you can then style your hair as usual. Be sure to avoid contact with the eyes. Based on the alcohol and menthol content, the liquid may cause a brief tingle, which subsides quickly.