Aluminium zirconium tetrachlorohydrex gly, a preparation commonly used as an antiperspirant
Using antibacterial soap (be careful with this because it can be counterproductive because it upsets the skin even more, so observe the effectiveness of this intervention closely), surrounding the skin with absorbent cotton or a band of cotton fabric, and treating the skin with absorbent body powders, including plain cornstarch, and even antiperspirants (with caution: do not apply it directly on the intertrigo because it will hurt) will all help prevent future occurrences.