Botox effects after 10 years? (Photo)

I have been getting botox for over 10 years on my forehead. It now looks thin and crepe like.I have not hadit done for over 6 months to see improve and it has not.Did the botox cause the muscle to atrophy leaving my skin looking older? Can I repair byNOT getting botox, letting the muscle strengthen again or is this permanent? I also have indented temples.I afraid it will just get worse with more botox. Sorry The photos are all loading upside down for some reason and i cant get the right.