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 - Dr. Koo Private Practice
LEVEL 4 – pH OPTIMUM RETINOL RESTORING - 8000 IUs - Dr. Koo Private Practice
LEVEL 4 – pH OPTIMUM RETINOL RESTORING - 8000 IUs - Dr. Koo Private Practice
Advanced concentration of medical grade retinol for cell renewal

LEVEL 4 – pH OPTIMUM RETINOL RESTORING - 8000 IUs

$215.00
WHAT IT DOES Repairs Collagen and Elastin, Improves Firmness, Smoothes Visible Lines, Boosts Skin Vibrancy
WHO ITS FOR Deeper Wrinkles, Rough Texture, Significant Pores
KEY INGREDIENTS Retinol, Niacinamide, Squalane, Vitamins D and F, phytosterols, low molecular weight Hyaluronate
Quantity:
FREE SHIPPING ON ALL ORDERS

50ml - Our category defining, hardest-hitting retinol is buffered to perfection to deliver maximum change without irritation. At 8000 IUs, this level is for skin that is experiencing significant signs of aging—loss of firmness to deep wrinkles. The retinol is encapsulated into a formula that includes Niacinamide and vitamins D and F, which actively repairs collagen and elastin, and accelerates the cell renewal at every layer. With consistent nightly use, you’ll see a noticeable softening and firming of texture and improved coloration.

Customer Reviews

Based on 23 reviews
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Grace K.
Only thing to help my skin texture and helps with adult under the skin acne

My skin was starting to get crepey after I hit 35 and I started seeing noticeable changes under my eyes, but also just generally around my neck and jowl area. I also went off birth control as I am trying to get pregnant next year and my skin went WILD. I started getting under the skin acne that never surfaced and J tried everything - tretanoin, other retinol products, etc. they either made my skin peel because I am so sensitive or they didn’t do anything. This retinol is the only thing that helps. I am obsessed. I will never use anything else. This product wow. Pores look reduced, skin texture improved, acne meaningfully improved (although not completely gone). Thank the lord for this

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Kendall W.K. (Orinda, US)
Absolutely Worth It!

My skin looked older than I felt as I turned 40. Sun discoloration, wrinkles, uneven texture. Thanks to Dr. Koo's product, I am aging much wiser ;) I am so much happier with my skin. Her retinol product works without any irritation. Seriously, I've never had redness, stinging, or burning. And I'm so much happier with my makeup-free skin!

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Pam C. (St Louis, US)
It works

I have been using Level 4 Retinol for several years. According to friends, my husband, and my own observation, it really has slowed the wrinkles and aging process. I am so grateful that it exists and I can use it!

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Ronda K. (St Louis, US)
Retinol review.

Great product and I am getting positive results. I am very happy I tried it and plan on using it in my daily routine from now on.

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sd (New York, US)
Love it

Best purchase this year. In 3 weeks I see good changes

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