RMS Beauty Defining Mascara in Black. RMS Beauty Defining Mascara in Black. Created with rich mineral pigments and certified organic oils, butters, and waxes, RMS Defining Mascara will instantly add life to your lashes without flaking, smudging, or clumping. The rich, creamy formula separates and defines lashes for natural drama.. Rich black shade. Made with natural ingredients. Cruelty-free. 0.23 fl oz. RMSR-WU63. MD. Leaders in Clean since 2009. RMS Beauty's mission to create healthy luxurious beauty means they only use the highest-quality clean ingredients, meticulously sourced and tested for complete purity. RMS Beauty founder and renowned makeup artist Rose-Marie Swift brings 36 years of industry experience, passion, wisdom and skill to her craft. Rose-Marie has mastered the art of clean, high-performing makeup so you can fearlessly master your own flawless looks. Each product in their collection strikes the perfect balance of superior clean formulations with professional, high-performance. So go ahead and let your natural beauty shine. All RMS Beauty products are free of harmful chemicals, synthetic preservatives, synthetic vitamins, and GMOs, filled only with healing nutrients that work synergistically with the skin and in harmony with nature and our environment.