All / [VS] 10% Glycolic Gel $25.00 {VS} Vitamin A I $42.00 Glycolic Serum ( all strengths) from $34.00 Retinal B3 Serum ( Vitamin A 1) $52.00 Retinol Peptide Serum ( Vitamin A 11) $58.00 Mandelic Acid ( All Levels) from $40.00