Plan around exposure, not just sunscreen
Shorten time in direct sun, seek shade, and cover exposed skin when practical. Avoid tanning beds and sunlamps. For a planned outdoor day, bring enough sunscreen to reapply rather than treating one morning application as all-day protection.
Use sunscreen as one layer
Choose broad-spectrum, water-resistant SPF 30 or higher. Apply it before going outdoors and cover all exposed skin. Reapply every 2 hours and immediately after swimming or sweating.
A hat, sunglasses, clothing, and shade reduce the amount of skin that relies on sunscreen alone.
Watch how your skin responds
A time outdoors that felt tolerable before treatment may not feel the same on isotretinoin. Move out of direct sun if skin becomes hot, painful, or visibly red. Sunscreen cannot reverse a burn that has already happened.
For a burn that has already occurred, follow the separate sunburn guidance. Get medical advice for severe pain or extensive blistering, dehydration, fever, or signs of infection.
Frequently asked questions
Does a higher SPF let me stay out all day?
No sunscreen removes all ultraviolet exposure. Keep the other protections and limit unnecessary or prolonged sun even when you use SPF 30 or higher.
What if I am swimming or sweating?
Use a water-resistant sunscreen and reapply immediately after swimming or sweating, as well as every 2 hours outdoors.