Agree on others but not the first one.

Please be cautious in using Rogaine. I won't suggest using Rogaine for 保养, maybe only when you have a serious hair losing problem. It does have some side effects.

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Use in Women

Only the 2% concentration of minoxidil is approved for use in women. Women are generally more sensitive to the side effects of minoxidil in decreasing blood pressure (hypotension) and may get light-headed from the medication. Women also have an increased risk of developing allergic skin reactions (contact dermatitis).

An annoying local reaction that women sometimes get from topical minoxidil is the development of facial hair. Although the facial hair slowly resolves when the medication is discontinued, at times the hair may need to be removed. Carefully trying to avoid the medication dripping down onto the temples and forehead seems to reduce, but not totally prevent, this problem. There is a significantly greater incidence of these side effects if the 5% solution is used.