This is a cosmetic product, not a medical treatment. It does not claim to stop hair loss, prevent shedding, or change the hair follicle. The product description says that, used consistently, a serum like this can help hair look better maintained from root to length and can make the root area feel fresher after washing. So the visible effect is about appearance and feel, not a measurable change in hair density.
You may notice a fresher scalp and a smoother, more glossy look after a few applications. These effects are not permanent; if you stop using the serum, they fade. A cosmetic cannot change the natural hair growth cycle, so there is no guaranteed timeline for any effect on shedding.
If you are concerned about hair shedding, it helps to look at the whole picture. A consistent hair routine, a balanced diet, enough protein, gentle handling, and managing stress all contribute to how hair looks and feels. This serum can be one part of that routine, but it is not a substitute for a balanced diet or medical advice.
If you notice sudden or patchy hair loss, or if shedding continues for a long time, consult a dermatologist. The product is not intended to diagnose, treat, or prevent any disease.