Are you a hair twirler at all? What is your diet like? Do you take vitamins? Have you been to a dermatologist? Do you use a lot of protein? Do you deep condition a lot?

There's many factors that can cause this. I don't really buy into the products that supposedly grow your hair faster. This comes with proper nutrition and good health of the hair. And time.
2c-3a - med-coarse - normal-high porosity - high density

NP/LP: CJ Daily Fix, KMF Whenever / Giovanni TTTT
RO/LI: Sevi Pumpkin Seed, CJ Argan & Olive Oil, Aussie Moist, TN Nourishing Moisture, YTCucs
DC: KC Stellar Strands
STYLER: Ouidad Climate Control, KCCC, SS Curl Enhancing Jelly, JC Rockin' Ringlets
COLOR: henna, amla & indigo
: glycerin in high/low dews, polyquats, parabens