Yes, Anagen stimulators are ABSOLUTELY important!
Below are multi-hair follicular units harvested via CIT. The patient who underwent the procedure noted shedding in the donor area just one month after beginning Propecia. The patient also stated that each morning when he awoke, he began seeing 12 or more hairs on his pillow. He also stated that he began seeing more hair come out when he ran his hands through the back of his scalp. He clearly stated that the shed hairs were from his donor area.
Examination of the grafts revealed a 17% telogen ratio. This is high for a donor area, but not beyond the normal limits. According to Kligman, one can have up to 25% telogen hairs on the scalp.
The history was very suggestive of an increased telogen ratio and this is what we found. Typically there is no more than 8% to 12% telogen hairs in a given donor area. Propecia stimulates anagen. When a new anagen cycle begins, the old resting hair is pushed out of the scalp and onto the pillow. The shift to anagen suddenly by propecia was evidenced by increased shedding.
Incidentally, each hair has only so many hair cycles. This is why you want to load up on anagen stimulators designed to prolong or promote anagen. These include Propecia, Avodart, Minoxidil, Nizoral, and Hair Cycle Shampoo. Multiple products used concurrently probably work better than one product at a time.