The optimal time to start treatment is when you begin to notice wrinkles develop. This can be as early as in your 20s for some and later for others. Depending on your genetics, sun exposure and degree of facial expression, you will benefit from Anti Wrinkle Injections at different times. Its best to start before your wrinkles become deeply etched into the skin. It is more difficult to reverse lines that are already present in the resting face than to prevent them from forming in the first place.