Vichy Deo Black is an antiperspirant deodorant designed for men that provides long-lasting protection against sweat and odor. This roll-on deodorant comes in a sleek black packaging and is formulated to be gentle on sensitive skin while delivering effective 72-hour protection. The product appears to be offered as part of a promotional bundle with 50% off on the second piece. The deodorant is part of Vichy's men's care line and features their signature dermatologically-tested formula. As a personal hygiene product, it should be applied to clean, dry underarms for optimal effectiveness.