Retinol

Retinol is the #1 skin-transforming ingredient of our time because it promotes the production of collagen and elastin — the building blocks for firm, plump, youthful-looking skin. Dr. Koo created 4 levels of retinol to be used at different ages and as your skin changes. Discover your level and experience the dramatic results.

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LEVEL 1 – pH OPTIMUM RETINOL SUSTAINING – 1000 IUs - Dr Koo Private Practice LEVEL 1 – pH OPTIMUM RETINOL SUSTAINING – 1000 IUs
LEVEL 1 – pH OPTIMUM RETINOL SUSTAINING – 1000 IUs

For Retinol Novices or Sensitive Skin

$120.00
LEVEL 2 – pH OPTIMUM RETINOL ACTIVATE - 2000 IUs - Dr Koo Private Practice LEVEL 2 – pH OPTIMUM RETINOL ACTIVATE - 2000 IUs - Dr. Koo Private Practice
LEVEL 2 – pH OPTIMUM RETINOL ACTIVATE - 2000 IUs

For mild to moderate wrinkles, uneven texture, and fine pores

$165.00
LEVEL 3 – pH OPTIMUM RETINOL REPAIRING - 5000 IUs - Dr Koo Private Practice LEVEL 3 – pH OPTIMUM RETINOL REPAIRING - 5000 IUs - Dr. Koo Private Practice
LEVEL 3 – pH OPTIMUM RETINOL REPAIRING - 5000 IUs
$185.00
LEVEL 4 – pH OPTIMUM RETINOL RESTORING - 8000 IUs - Dr Koo Private Practice LEVEL 4 – pH OPTIMUM RETINOL RESTORING - 8000 IUs - Dr. Koo Private Practice
LEVEL 4 – pH OPTIMUM RETINOL RESTORING - 8000 IUs
$215.00