Investigation of Sun Protection Factor (SPF) of Raspberry Seed Oil, Niacinamide and Zinc Oxide in Combination for their Possible Use in a Sunscreen Formulation. J of Skin [Internet]. 2024 Sep. 15 [cited 2026 Apr. 27];8(5):1807-14. Available from: https://skin.dermsquared.com/skin/article/view/2939