<prompt> Telogen phase of hair cycle lasts for3 Days3 Weeks3 Months3 Years  <response>: Hair cycles:- anagen - catagen - telogen. 1 Anagen:- Hairgrowth phase, duration of phase determines length of hair, duration 2-6 years on scalp; 85 of hairs in this cycle at any one time. 2 Catagen:- Transitionalphase regression; bulb regresses and IRS lost, 2-4 week duration on scalp; 2 hairs in this cycle. 3 Telogen:- Resting phase, proximal hair terminal is club-shaped instead of bulb-shaped, duration of cycle approximately 3 months in scalp; 15 of hairs in this cycle; dermal papilla located higher up in dermis during telogen. Ref:- Sima Jain; pg num:-13 