Smooth issue

[system]

hi guys i’m very very new and i don’t know how to make this question because i don’t speak english but maybe someone understand and maybe someone help me.

i’m modeling a head in many subdivision levels, but the problem is when i went down the subdivisions and use the smooth tool, and then back to the higer subdivision levels, in the same areas when i use the smooth tool, appears many strange block and i don’t know why!!!

if anyone have an answer for this please tell me how to fix it. thanks.

Attachments

[beta_channel]

fill your object with the FLAT COLOR material.

[system]

already do that, but i discover if you go down with subdivisions level and use smooth tool without polypaint activated, the problem is gone, and you can edit the mesh and you can go up with the subdivisions and you can activate again polipaint.

so… the problem is solve and i apreciate your answer .)