What type of medicine influences hair growth?

Minoxidil is a medication that is specifically known for its role in promoting hair growth, particularly in cases of androgenetic alopecia, commonly known as male or female pattern baldness. It works as a vasodilator, which means that it helps to increase blood flow to the hair follicles, providing them with essential nutrients and oxygen that can enhance the hair growth process. This topical treatment is often applied directly to the scalp and has been clinically proven to help stimulate hair follicles, leading to hair regrowth in many users.

On the other hand, the other medications listed do not have any established effect on hair growth. Ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID), is used primarily for pain relief and reducing inflammation, while Advil is simply a brand name for ibuprofen. Aspirin, another type of NSAID, is also primarily used for its anti-inflammatory properties and pain relief, and it does not have any known benefits for stimulating hair growth. Therefore, minoxidil stands out as the correct answer due to its specific application and effectiveness in promoting hair regrowth.