Hormonal acne at 40 isn't teenage acne. The mechanism is different. So is the treatment.
Adult acne and teenage acne look the same in the mirror. Underneath, they are not the same disease.
Hormonal Acne
The hormonal mechanism behind adult acne — and why teenage treatments make it worse
Your skin is breaking out at 35. The cause isn’t the same as when you were 16 — and neither is the fix.