I have some recession in the corners of my hairline (might just be maturing) and I use regaine to try and promote regrowth there. The medication ambiguously recommends 1g dosage (half cap) for the 'affected scalp area', but obviously the size of affected area differs for each person. My question is: is 0.5g per hairline corner (1g total) too much, as it is a smaller area than the scalp? Is there an ideal dosage in proportion to surface area or is 1g an arbitrary limit set to avoid side-affects?