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Frequently Asked Antiperspirant Questions

General Questions About Secret, How It Works and Perspiration

What is antiperspirant?

Antiperspirants act by plugging the sweat duct, thus reducing wetness. Because perspiration stimulates odor-causing bacteria, antiperspirant also helps reduce body odor.

Why do we perspire?

Sweating is your body's way of releasing excess heat and cooling itself. Sweating is natural in many situations, but sweating can be intensified by any number of elements, including warm weather, exercise and stress.

What Secret should I use for excessive perspiration?

Looking for strong protection? Try Secret Clinical Strength. Choose from Original, Sensitive Skin, Sport, Waterproof and Spotlight Scents.

What causes underarm wetness and odor?

Perspiration is the body's natural way to regulate its temperature and hydrate the skin. Perspiration itself is essentially odorless and evaporates readily. In areas like underarms, where perspiration can't readily evaporate, it causes the feeling of wetness. Bacteria, which thrive in warm and moist surroundings, break down the perspiration and create underarm odor.

How do Secret antiperspirants help prevent underarm odor and wetness?

Since perspiration in the underarms doesn't readily evaporate, a feeling of wetness results and bacteria thrive in that wetness, creating underarm odor. Secret works by slowing the flow of perspiration to the surface of the skin. It does so by being pH (measure of alkalinity) balanced. When the active ingredient in Secret comes in contact with your perspiration, it dissolves into the sweat ducts. As you continue to perspire, the perspiration makes the pH of the solution rise. When the solution reaches a high enough pH, the active ingredient forms superficial plugs in those sweat ducts, reducing the flow of perspiration to keep you feeling dry. Thus, Secret protects you from underarm wetness (antiperspirant) and also helps prevent underarm odor (deodorant).

How do antiperspirants and deodorants differ?

Deodorants help control odor primarily by masking the underarm odor caused by the bacteria interacting with perspiration and also by reducing odor-causing bacteria. Antiperspirants help control wetness, and thereby odor, by slowing the flow of perspiration to the surface of the skin.

Do Secret antiperspirants have an expiration date?

Yes, Secret antiperspirants have an expiration date located either on the bottom of the container or on the bottom of the back label. Our research shows the ingredients are stable until the expiration date, if stored according to instructions on the label. Beyond that date, the ingredients may no longer be stable and/or the product formulation may change.