I'm using Minoxidil on my hairline after losing hair due to weight loss.

If you use Rogaine you need to apply it to the scalp (not hair). If you use too much your scalp will naturally be wet.  If this is a problem you should see a doctor. 

Thinning Hair -- Rogaine, Propecia, Viviscal, Progesterone, PRPIf you have thinning hair you really need an evaluation to see if it is genetic or from another cause like stress or autoimmune. If it is determined to be genetic there are many options and traditional treatments like rogaine foam and propecia pills can be used. I have great success in my practice using injectable progesterone and prp to the scalp. Postmenopausal women also benefit from spironolactone. I suggest seeing a dermatologist with expertise in hair loss. Best, Dr. Emer.

Minoxidil helps a small proportion of those with genetic hair loss. It does not help everyone. If hair loss is from another cause (like shedding from weight loss) ... it may help but be sure to speak to a physician.The medication needs to get onto the scalp to work and stay there for 5 hours. Any medicine that gets on the hair does not do anything. It needs to get onto the scalp. The dose is important so be sure to follow your physician's advice on proper dosing. 

Minoxidil is a liquid that should be applied to the scalp not the hair. So when applying it, the hair must be separated when applying the minoxidil.