La Roche-Posay Effaclar Ultra Concentrated Serum is a specialized skincare treatment designed to target imperfections and blemishes. This potent formula contains active ingredients that work to unclog pores, control excess oil, and improve overall skin texture while being gentle enough for sensitive skin. This serum comes in a 30ml glass bottle with a dropper applicator for precise dispensing. The formula contains key ingredients like Salicylic Acid, LHA, and Niacinamide that work together to address skin concerns. The product is dermatologically tested and free from parabens, making it suitable for those with sensitive and acne-prone skin. For best results, apply in the evening after cleansing and before moisturizer.