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As Seen In
CLINICALLY PROVEN RESULTS
*Unretouched Photos
91% Showed improvement in firmness of skin*
97% Showed improvement in appearance of fine lines and wrinkles*
91% Agreed the product improved skin texture^
94% Agreed skin looked more radiant^
94% Showed improvement in skin elasticity**
97% Agreed the product did not cause skin sensitivity compared to other, similar products^
*Results after 4 weeks of daily use, based on an 8-week independent Clinical Study of 33 women, ages 40-65, after daily use of Retinol Level 3
^Based on an independent consumer perception study with 33 women ages
40-65 after 8 weeks of Retinol Level 3 use
**Results after 8 weeks of daily use, based on an independent Clinical Study of 33 women, ages 40-65, after daily use of Retinol Level 3
But not all retinol is created equal.
At Private Practice, We Do Retinol Differently
Shop RetinolWe formulate our retinol to be extra gentle on the skin and deliver it in 4 concentration levels specific to your current skin and life stage.
WHAT RETINOL LEVEL IS RIGHT FOR YOU?
Our 4 levels deliver the precise concentration of retinol needed to create change for your specific skin stage.
Level 1
For early age prevention or sensitive skin
highly customized, entry-level retinol- maintains skin’s collagen and elastin density
- boosts natural radiance, reduces pores
Level 2
For mild to moderate wrinkles, uneven texture and fine pores
- encourages collagen and elastin
- improves texture and firmness
- minimizes pores, enhances radiance
Level 3
For moderate to advanced wrinkles, irregular texture and noticeable pores
- skin regenerating concentration
- stimulates collagen and elastin
- softens lines, improves firmness and radiance
Level 4
For deep wrinkles, rough texture and significant pores
- most active level for increased cell renewal
- repairs collagen and elastin
- firms, smoothes, boosts vibrancy
Five Star rating for a reason
"Absolutely incredible. My skin is glowing and radiating. It’s even cleared up acne
scarring!”
- Alyssa A (Level 1)
“I've been using Level 4 for two months now and my skin is different, in the best possible way. It looks brighter, softer and smoother.”
- Julie D. (Level 4)
"In just 28 days, my skin is smoother and age spots are gone.”
- Geneva S (Level 3)
“This product is the best retinol I have ever used. I will never go back to my former
product. It works wonders on my skin texture.”
- Sue N (Level 4)
Complete your regimen
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RETINOL TIPS from Dr. Koo
USE IT AT NIGHT
Retinol is naturally photo-unstable so it breaks down in sunlight, making it less effective. Nighttime use is most effective.
APPLY TO CLEAN, DRY SKIN
Apply retinol to clean skin, after cleansing, for maximum absorption.
BE CONSISTENT
Consistent application of your Retinol is how you get results.
PAIR WITH VITAMIN SERUM
Apply Vitamin Serum after Retinol to boost its effectiveness—and see quicker results.