hello! I've been using rogaine foam without any signs or history of thinning.

Allo there guys. About a month ago I had a dreadlock pulled out while using some machinery at work and the hair still hasn't grown back. My dread stylist suggest that I try rogaine for the bald spot. So, I went to walmart and bought the stronger one for men and have been using it on my entire head twice a day thinking that it could help make all my hair healthier. I started to google rogaine side effects (which lead me here) and am worried that it could actually cause my hair to fall. Should I be worried if all my hair still looks as it did when I was a teenager? I'm a 29 year old white male if that helps. Looking forward to hearing your feedback! Thanks in advance!