Tretinoin vs. micro-needling: what increases sulfotransferase activity more? Research/Science 7/3/2025
Tretinoin and microneedling both enhance hair growth through different mechanisms, with microneedling being considered safe for long-term use. Optimal microneedling needle length varies, but 0.8 mm is suggested for hair growth, and a Dermastamp is recommended to avoid skin damage.
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