Certain Dri Antiperspirant solid for excessive perspiration.7 oz created specifically to complete the line of Certain Dri Antiperspirant products for those who want the same 72-hour protection from excessive underarm perspiration in a solid application. The product is specially formulated to provide everyday, all-day dryness for those who suffer from excessive underarm perspiration. Certain Dri Solid Anti-Perspirant contains 25% aluminum Sesquichlorohydrate.