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About product and suppliers:
        Alibaba.com offers 769 biotin hair growth products. About 40% of these are hair treatment, 19% are vitamins, and 5% are beauty products. 

A wide variety of biotin hair growth options are available to you, such as powder, capsules, and tablets. You can also choose from gmp, fda, and haccp. As well as from free samples, paid samples. 

There are 777 biotin hair growth suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Canada, which supply 90%, 3%, and 1% of biotin hair growth respectively. 

Biotin hair growth products are most popular in Mid East, North America, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 69 with ISO9001, 48 with Other, and 42 with GMP certification.