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    GlossaryGuard Hair (Protective Hair)

    coarse, longer hairs forming the outer layer of an animal's coat

    Guard hair, also known as outer hair or protective hair, refers to the coarse, longer hairs that form the outer layer of an animal's coat. These hairs serve to protect the underlying softer, insulating underfur from environmental elements like moisture and dirt, and they often provide camouflage or signaling functions.

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      learn Estradiol

      an estrogen promoting hair regrowth more commonly used in women

      learn Procyanidin

      bioflavonoid found in plants with antioxidant and hair stimulating properties

      learn Melatonin

      hormone commonly taken for sleep aid has some topical benefits for hair

      learn Tretinoin

      the gold standard retinoid in dermatology that's also helpful for hair regrowth alongside Minoxidil