You can always be confident in the original! Secret Original Solid deodorant is the one youâve known and trusted for years for odor and wetness protection. pH-balanced to work with your body's natural chemistry, Secret Original Solid helps you stay dry and confident during the day. Trust the odor- and wetness-fighting protection of Secret Original SolidâStrong Enough for a Woman. Solid: The original, tried-and-trusted protection Antiperspirants act by plugging the sweat ducts, reducing sweat. Because perspiration stimulates odor-causing bacteria, antiperspirants also help reduce body odor. What is antiperspirant and how does it work?