10/24/2026
What does cornstarch have to do with underarm tox? 🌽💉
It helps us see where the sweating is happening!
For the Minor’s starch–iodine test, we apply iodine to the underarm, let it dry, then dust on cornstarch. Areas where sweat is present darken, helping us map the treatment area with more precision. It’s a quick in-office assessment that helps us ensure treatment is the most effective.
If excessive underarm sweating is affecting your clothes, confidence, or daily life, let’s talk through your options!