Do tanning intensifiers really work? In fact, according to the American Cancer Society, Tanning accelerators, such as those formulated with the amino acid tyrosine or tyrosine derivatives, are ineffective … evidence suggests they don't work. FDA considers them unapproved new drugs that have not been proven safe and effective. How do you use a tanning intensifier? Step-by-step gradual tan application tipsBuff your skin and shower.Taking a small blob at a time, rub it in thoroughly, applying in a circular motion. After applying, wash your hands to avoid tell-tale palms!Continue to apply the product every day and you should see a...