Someone asked about sunscreen earlier - this is from an article at today.com
They have access to a container with necessary supplies, such as feminine products, birth control, vital medications, contact lens solution, sunscreen, and insect repellent. Otherwise, they're on their own. Contestants don't get razors, toothbrushes, or other conveniences, so if they have bright white teeth or aren't growing body hair, it may be because of
tooth whitening or laser hair removal they had done before they left for the show.