Watch the 30-second routine
The video is a simplified educational model. It is not a diagnosis, a prescription, or a promise that iodine will clear every nail.
1. Start with a dry nail
If the nail is wet after bathing, sweating, swimming, or washing, dry it first. A cool dryer can help remove moisture from the nail edge and the space under a lifted tip.
Why it matters: water can dilute iodine before it reaches the target area. A dry nail also makes it easier to see whether the liquid is being absorbed or just sitting on the surface.
2. Apply one small wet contact
Use a small amount at the nail tip, side edge, or lifted area rather than flooding the skin. The practical target is contact, not a large puddle.
Iodine is a surgical antiseptic used because it can inactivate many microbes it contacts. For toenails, the hard part is getting contact under or inside thickened nail tissue.
3. Wait before repeating
Give the nail time to absorb and dry. A common practical rhythm is to wait about 30 minutes or until the nail looks dry again before repeating a second light pass.
Remove water so iodine is not diluted.
Place a small amount where liquid can contact the nail.
Let it dry before judging or repeating.
4. Track slow nail change
Even when organisms are reduced, the old damaged nail usually has to grow out. Look for clearer growth from the base, less crumbly debris, and no spread to nearby nails.
One month can be enough to notice early change in debris, odor, or surface behavior, but full toenail replacement often takes many months.
When to stop and ask a clinician
Do not rely on home care alone if you have diabetes, poor circulation, immune suppression, open skin, ulcers, increasing pain, redness, drainage, iodine allergy, thyroid disease, pregnancy, breastfeeding, or a dark changing nail stripe.