Science brings us some understanding of skin and hair, but we humans are still learning new things about “basic” stuff. Certain circumstances can be dealt with, but how is a matter of trial and error, and due to our ever changing bodies and climate, adjustments are a lifetime activity.
The information on this site is not a substitute for medical evaluation or treatment when necessary. If you give something a try, it can take days to maybe a month to see true results. How long depends on your body. The rule of thumb for change is to give it two weeks before making adjustments.
Ugly Mug Studio does not claim to know with certainty that any of the information provided here pertains to any one person. Continued learning is the only way for any of us to gain answers: experimenting, reading, and checking sources.