Anagen (growth phase): Most hair is growing at any given time. Each hair spends several years in this phase. Catagen (transitional phase): Over a few weeks, hair growth slows and the hair follicle shrinks. Telogen (resting phase): Over months, hair growth stops and the old hair detaches from the hair follicle.
Definition of phylactic - A medicinal substance or remedy that protects from disease, toxicity, or infection. Definition of phylactic - A medicinal substance or remedy that protects from disease, toxicity, or infection.
Chemistry and pharmacology. 1  pK, negative logarithm of the dissociation constant K (-logK) 2  Pharmacokinetics, a branch of pharmacology dedicated to determining the fate of substances administered to a living organism.