The Alpecin Double Effect Caffeine Shampoo is a 200ml product specifically designed for thin hair, with a formulation that includes caffeine as its key ingredient. This shampoo is part of the Alpecin Double Effect Hair Shampoo product line, aimed at preventing hair loss and promoting healthy hair growth. Suitable for adults of any gender, this shampoo is free from alcohol, ammonia, and dyes, making it safe for all hair types. With a period after opening of 12 months, this shampoo is a natural and effective solution for maintaining healthy and vibrant hair.