We present preliminary results of a photometric investigation on IC10 using data collected with ACS@HSTS and WFPC2@HST. We estimate the distance using the Tip of the Red Giant Branch (TRGB). According to current estimates, IC10 seems to be a member of the M31 group. By assuming the same distance for the two different pointings, the reddening shows a significant decrease when moving from the center toward the external regions. Moreover, we show that stellar isochrones at fixed metal content, distance and reddening account for both Main Sequence (MS) and evolved stellar components.