Fuller Hair in 8 Weeks? The Truth You've seen the ads: thinning to fuller hair in 8 weeks. Here's what really happens. Hair grows about half an inch a month. In the first weeks you may even shed more, and that's when most people quit. The first signs usually show up around months 3 to 4. A fuller look takes 6 to 12 months. Swipe for the real timeline, and share this with a friend who quit too soon. Not medical advice. For educational purposes only. The real hair growth timeline, week by week and month by month. Why 8-week promises don't add up, why early shedding happens, and when you can expect to see changes. Not medical advice. For educational purposes only. #hairloss - @hairlossremedy