Product details:Top-up your supply of the best-selling transformative retinoid 1 vitamin a face serum from Skin Rocks with this refill set. Enriched with a multitude of skin-loving ingredients, this entry-level serum is ideal for those who are new to retinoids or you have previously found retinoids to be too strong - delivering a renewed, youthful and smoothed complexion. Skin Rocks Retinoid 1 Vitamin A Face Serum Refill 30ml