Making homemade all-natural sunscreen from local wild creosote bush (Larrea tridentata) involves infusing its leaves into a carrier oil to extract beneficial compounds, then combining with other natural ingredients for extra sun protection.
Creosote bush has been noted for its antioxidant and UV-protective properties, with some sources suggesting a natural SPF of around 7 when used in oil infusions. Homemade sunscreens may not provide the same level of protection as commercial products, and their SPF is difficult to verify without lab testing. Always test for skin sensitivity and consult a professional before use. You will need:
- Dried creosote bush leaves: 1 cup ensure they are clean and free of contaminants). Drying reduces moisture to prevent spoilage in the final product.
- 8 oz organic olive oil, or coconut oil. Olive oil is commonly used for creosote infusions due to its stability and skin benefits. Coconut oil adds a natural SPF of about 4-5.
- Beeswax: 2 oz (for texture and to create a protective barrier on the skin). Adjust for desired consistency (less for softer sunscreen, more for a firmer balm).
- Non-nanoparticle zinc oxide: 1-2 tbsp (for added SPF; non-nano ensures it sits on the skin rather than being absorbed). Use cosmetic-grade, lead-free zinc oxide and wear a mask to avoid inhaling particles.
- Optional high-SPF oils: 1-2 tsp carrot seed oil (natural SPF ~30-40) or red raspberry seed oil (natural SPF ~25-50) for enhanced sun protection.
- Optional: Vitamin E oil (1 tsp) for additional antioxidant properties and skin nourishment.
- Glass jar with lid (e.g., mason jar)
- Double boiler or a heat-safe bowl over a pot of water
- Fine mesh strainer or cheesecloth
- Small tins or glass jars for storage
- Wooden or metal spoon
Harvest and dry creosote leaves gathered from a clean, pesticide-free area. Avoid plants near roads or polluted sites.
Dry the leaves to remove moisture: Spread them on a baking tray or drying screen in a warm, well-ventilated area away from direct sunlight, turning every 12 hours for 2-3 days. Alternatively, tie stems in bundles and hang upside down for up to 2 weeks. Fresh leaves can be used but should sit out for 1-2 days to reduce moisture.
Place 1 cup of dried creosote leaves in a glass jar. Pour 8 oz of carrier oil (e.g., olive or coconut oil) over the leaves, ensuring they are fully submerged. Choose an infusion method:
Slow Infusion: Seal the jar, cover with a brown paper bag, and place in a sunny spot for 8-12 weeks, shaking occasionally. This method preserves volatile compounds but takes longer. Alternately, Place the jar in a crock pot or a pot with water (2 inches below jar top) and heat on low (or warm setting) for 2-8 hours, or use a double boiler on low for 2-3 hours. Monitor to avoid overheating, which can degrade the oil.
Strain the oil through a fine mesh strainer or cheesecloth into a clean container, discarding the leaves.
In a double boiler, combine the infused creosote oil with 2 oz of beeswax. Heat gently until the beeswax melts completely, stirring to combine. Remove from heat and let cool slightly (2-3 minutes).
Add 1-2 tbsp non-nano zinc oxide, stirring thoroughly to avoid clumps. Wear a mask to avoid inhaling zinc particles. Optionally, add 1-2 tsp carrot seed oil, red raspberry seed oil, or 1 tsp vitamin E oil for extra SPF and skin benefits. Stir until fully incorporated. For a smoother, lotion-like consistency, whip the mixture with a stick blender or hand mixer (optional).
Pour the warm mixture into clean tins or glass jars. Let cool completely (several hours) before sealing with lids to prevent condensation. Store in a cool, dry place. The sunscreen should last up to 2 years if no water or contaminants are introduced.
Apply a generous amount to exposed skin, rubbing in thoroughly. A small amount goes a long way. Reapply every 2 hours or after sweating/swimming.