SKIN CEO 0.5% is perfect for beginners to retinol, young, oily/acne prone skin.
SKIN CEO 1% is perfect for experienced retinol users seeking maximum benefits.
Perfect Change Serum is best for hyperpigmentation, melasma, or textural scarring. (New-to-retinol useres should consider starting with 0.5% SKIN CEO before using this product.)
If you have any questions, email me for further advice on how to best use these products for your needs.