28 citations
,
March 1942 in “Journal of Endocrinology” Male rats grow hair faster than females, and certain hormones can slow or slightly increase hair growth, but not significantly beyond natural rates.
4 citations
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May 2014 in “Pharmaceutical Biology” Glycyrrhizic acid from sweet licorice can effectively remove hair without skin irritation.
1.5% lactic acid improved mink growth and health best.
3 citations
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January 2019 in “Research journal of pharmacy and technology” The hair tonic with menthol grew longer hair, but both formulas had similar overall hair growth.
3 citations
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October 1979 in “Laboratory animals” Hairless rats are good for testing anti-inflammatory drugs, similar to haired rats, without needing to remove fur.