Can I use sunscreen and insect repellent with DEET at the same time?

Combination repellent/sunscreen products are not recommended. If necessary, use the two products separately.

If you use sunscreen and DEET repellents together, use a higher SPF sunscreen and apply more often. Which should I apply first, sunscreen or insect repellent with DEET? Apply sunscreen 30 minutes before sun exposure, and then apply DEET.