Thank you for viewing. This is a refill for VT CICA RETI-A Essence 0.1. Purchased around December 2024. - Product Name: VT CICA RETI-A Essence 0.1 Refill 30ml - Ingredients: CICA, RETI-A 0.1% - Brand: VT [How to Replace the Refill] 1. Unscrew the outer container (the translucent container) at the bottom of the product counterclockwise to remove the inner container. 2. Insert the new refill from the top, aligning it with the indentation. 3. Screw the outer container (the translucent container) at the bottom of the product clockwise to complete the replacement. ※ Please remove the transparent part inside the refill cap before replacing.