Name change: Retinal B3 Serum. This high-performance exfoliating serum uses microencapsulated technology that delivers a high potency Retinal (the least irritating form of Vitamin A) via controlled release for enhanced efficacy and minimal irritation. This serum is the ideal introduction of Vitamin A into any skincare routine. Do not recommend for clients that are pregnant or nursing. Recommended for skin prone to noninflamed acne and aging.