When and to what extent an improvement can be expected depends on the cause and the specific stage (early/advanced) of the condition. The longer the hair loss or thinning has persisted, the more likely it is that hair follicles have already shrunk. Hair regrowth can only be expected depending on the specific condition of the hair roots. However, even in these cases, consistent use can at least lead to an overall improvement in hair health, as not all hair follicles are in the same condition at the same time. Any underlying medical cause of hair loss should always be diagnosed and treated by a doctor so that Thymuskin can support the regeneration process as effectively as possible.