Salcura Antiac Activ Gel Serum 15ml Salcura Antiac Activ Gel. Max strength formulation for targeting stubborn spots that just won't budge. Targets acne, blackheads, whiteheads & pimples with visible results in as little as FOUR hours. This extra strong formulation is part of the Antiac Activ range designed to overcome flare ups or persistent moderate to severe acne. Antiac products contain natural oils, vitamins, minerals & naturally derived preservatives. All Salcura products are free from chemicals that are known to cause additional sensitisation of the skin.