Yes biotin does really make your hair grow.
I have had great success with growing my hair using biotin and my hair did grow faster and longer like I wanted.
The use of biotin for your hair also makes your hair thicker, shinier and healthier and can help prevent hair loss as well.
Biotin helps with hair thinning and assists in regrowing any lost hair that you may have experienced.
Using biotin for your hair you should see results with hair growth within a month or two as it won't work overnight but you should see results within a month or two.
I also like to use coconut oil on my hair and do the hot oil hair treatment which also helps keep my hair hydrated, shiny and healthy.
When washing your hair make sure to use a moisturizing shampoo and use some conditioner as well which helps your hair stay shiny, healthy and prevents the hair from drying out.