Bengay Vanishing Scent. Topical Pain Relief Gel - Experience effective pain relief with Vanishing Scent Bengay Gel. Formulated with 2.5 percent menthol, this gel provides cooling relief for minor arthritis, backache, muscle, and joint pain. Its deep-penetrating formula targets aches and pains, providing quick and lasting relief. As the number-one doctor-recommended OTC brand of topical pain reliever, Vanishing Scent Bengay Gel features a non-greasy formula that won't leave residue on your skin. Plus, its vanishing scent starts fading in minutes, ensuring a pleasant application experience.