RADICAL strengthening shampoo is intended for regular washing when you notice more hairs than usual on the comb, pillow or in the shower drain. Because the 400 ml bottle is sized for a longer course, it is reasonable to use it consistently rather than only once in a while. Anti-hair-loss shampoos are usually assessed over at least 8–12 weeks, since the hair growth cycle is slow and visible changes do not appear after only a few washes.
Apply it mainly to the scalp, not just to the hair lengths. Wet the hair well, lather a suitable amount in your hands, then massage the foam into the scalp for one to two minutes before rinsing thoroughly. This matters because the product is designed to cleanse the scalp, remove sebum and residue around the roots, and support a cleaner environment for existing strands. The lengths will be cleaned as the foam rinses through them.
If your scalp starts to feel tight or overly dry with frequent use, you can alternate it with a mild moisturising shampoo. Try not to judge the product by a single wash: reduced breakage, a fresher scalp and hair that looks less weighed down may be noticed earlier, while changes related to shedding require a longer routine. If shedding is sudden, patchy, or comes with itching, redness or other scalp symptoms, consult a dermatologist or trichologist.