Brand from Japan: TRANSDERMA. This serum contains vitamin C (ascorbic acid), a skin-conditioning ingredient that leads to beautiful skin, and gives you clear, firm skin, radiance, and tightened pores, resulting in smooth, firm skin.Containing neither water nor oil, and containing only ingredients that allow pure vitamin C to penetrate, Transderma C does not irritate the skin, allowing vitamin C to be absorbed into the stratum corneum, restoring clarity and firmness to the skin.How to use:Apply 1-2 pumps to your face and neck after washing your face in the morning and evening. You can also apply it around the eyes. If it gets in your eyes, rinse it off immediately.Leave it for about 5 minutes after application to allow Transderma C to fully absorb into your skin, then proceed with your usual skin care routine.Replenish moisture with lotion, and then use a moisturizing cream to prevent dryness.Just add Transderma C to your favorite skin care products.Because it is fragrance-free, it will not inter