This is for two reasons. Firstly if you apply it during the day when you are sweating, it can lessen its effectiveness. Secondly, any dampness amplifies the burn! As such, make sure your underarms are completely dry before application.

Certain Dri contains the ingredient aluminum chloride hexahydrate - as do other antiperspirants - and that is what makes people itchy.

Certain Dri is designed to stop excessive sweating for up to 72 hours. Certain Dri is a prescription-strength roll-on antiperspirant that aims to offer up to 72 hours of protection from excessive sweating. It's made with 12% Aluminum Chloride, which deeply penetrates sweat glands to combat perspiration from the source.

Truth: Think outside the pits! You can glide, stick, spray, and roll-on nearly anywhere that sweating is a problem (picture hands, feet, face, back, chest, and even groin.)

Some dosage forms listed on this page may not apply to the brand name Certain Dri. Applies to aluminum chloride hexahydrate topical: topical solution. Side effects include: Local skin irritation (burning, stinging, itching, tingling).

Burning or itching may also occur before the lesion appears. These most often occur on the hands, feet, tongue or genital area, and they are often a result of taking antibiotics, particularly trimethoprim-sulfamethoxazole, or NSAIDs.

Side effects include: Local skin irritation (burning, stinging, itching, tingling).

For best practices in managing both excessive sweating and odor, use a combination of antiperspirant and deodorant.

You may not have to use Clinical Strength Certain Dri® every day. You may wish to begin your treatment by using Certain Dri® every day until excessive perspiration is controlled. Thereafter, apply Certain Dri® every other day or as needed.

Treatment options

1. Use topical antiperspirants. Tired of the sweat stains on your shirt?
2. Wait between showering and dressing.
3. Shave your armpits.
4. Avoid sweat-inducing foods.
5. Eat more foods that reduce sweat.
6. Stay hydrated.
7. Wear breathable, loose-fitting clothing.
8. Skip the caffeine.

In order to work, the active ingredients in an antiperspirant need time to get down into the sweat ducts where they can do their jobs blocking sweat production. Since most people sweat less during the night, this makes bedtime the perfect time to apply antiperspirant.

Begin your treatment by using Certain Dri® once a day for one week. Then decrease to using it every other day or as needed. Caution: Do not use immediately after shaving or showering; or if skin is broken or irritated. Skin area must be completely dry prior to application.