Tretinoin is a topical form of vitamin A that helps the skin renew itself.

It has been approved in Japan in a topical form to treat glaucoma.

I switched to a topical form of the drug recently, and so far it's working well, with none of the wretched dry mouth.

Use the topical forms of echinacea externally only.

Use the topical forms of St. John's wort externally only.

Self-mockery: Old Comedy is a highly topical form of satire directed at people known to the original audience.

A topical form of the drug has been developed to treat skin lesions from the spread of breast cancer.

The recommended forms of treatment include some form of anesthesia, either topical or general.

The topical forms are used for mild to moderate cases of athlete's foot.

Both topical and oral forms of prescription antifungals are effective in curing athlete's foot for most people.