Easily repel dust mites with your usual laundry routine*. You don't need to do anything special. This is a dust mite repellent detergent recommended by experts. *Regarding dust mite repellent effect Use it on your everyday cotton materials, bedding, cotton sweatshirts, stuffed animals, towels, etc. Dermatologist-supervised, skin tested**. **Not guaranteed to be non-irritating for all skin types. With the same cleaning power, deodorizing power, and anti-odor power of Ariel and Lenor, you can even repel dust mites* with your regular laundry. *Repels indoor dust mites. Not effective on all mites or materials. Detergent for one-rinse wash. Detergent and fabric softener make cotton materials (excluding very thin fabrics) less attractive to dust mites.