Treating Sweat Stains on Shirts
Underarm stains can involve perspiration, body oils, and deodorant or antiperspirant residue. Their appearance alone does not establish a safe treatment for every shirt. Follow the item's care limits, choose a compatible method, and inspect the fabric after washing. A fresh scent is not proof that visible buildup has cleared or that heated drying is now appropriate.
Sweat is only part of the picture
Ariel distinguishes perspiration from residue associated with deodorant or antiperspirant. Those deposits can contribute to different-looking marks and changes in the fabric's feel. Identifying the buildup is useful before deciding that a stain is simply a discoloration to be bleached away.

Follow a compatible wash method
The guide describes a correctly dosed capsule-based wash and stresses the garment's fabric-care instructions. Its product-specific claims should not be treated as a guarantee for every shirt. Keep washing temperature and cycle within the label's limits, leave adequate room in the machine, and assess the affected area after the wash rather than assuming that fragrance proves the residue is gone.
GarmentCare Guide 