I found this online a few weeks back. I haven't made and tried it yet, but I plan to.
How to Make Organic Sunblock
Getting outside for an afternoon of fun in the sun will healthier if you're wearing organic sunscreen. Make your own organic sunblock and you can avoid harmful synthetic chemicals added to commercial products. Making this recipe is simple and the ingredients are readily available at organic health food stores.
Difficulty: Moderately Easy
Instructions - Things You’ll Need:
* Double boiler * Hand-held mixer
* Storage jar * 2 1/2 oz. sesame oil
* 1 1/2 oz. coconut oil * 1/2 oz. beeswax
* 4 oz. distilled water or green tea
* 2 tbsp. of zinc oxide * 1 tbsp. wheat germ oil
* 10 - 20 drops antiseptic essential oil (optional)
* 1 tsp. vitamin C powder * 200 IU vitamin A
Step 1: Gather ingredients needed.
Step 2: Assemble and heat double boiler to medium temp.
Step 3: Combine sesame oil, coconut oil and beeswax in double boiler. Warm over medium heat.
Step 4: Remove from heat. Pour in green tea or distilled water.
Step 5: Mix with electric hand-held mixer until ingredients are thick and smooth.
Step 6: Add zinc oxide, wheat germ oil, vitamin C and vitamin A.
Step 7: Drop in essential oils--if desired--and blend well.
Tips & Warnings
* Add 2 oz. of rose water and Aloe Vera gel with 1 tbsp. of glycerin when adding zinc oxide, for a smoother feel.
* Store in a tight container. The green tea recipe will last about 2 weeks. The water method will last approximately 6 months.
* Check the health food section of your local grocery stores for ingredients, if shopping there is more convenient than a health food store.
Added Note: Sunscreens (especially commercial sold products) are great, however, lessen proper Vit D absorption, which most of us are at least a little deficient in. Remember that skin is the largest organ of the body. What you apply on it, enters and effects your whole system. Good rule of thumb: if you can't put in your tummy, it shouldn't really go on your skin either. So think, would you ingest the list of ingredients on that label?