The Peter Thomas Roth Even Smoother Glycolic Retinol Resurfacing Serum is a potent skincare product designed to address multiple concerns, including texture, clarity, uneven tone, fine lines, and wrinkles. This serum combines the exfoliating power of glycolic acid with the rejuvenating properties of retinol to deliver smoother, brighter, and more youthful-looking skin.
Key Ingredients and Their Benefits
This serum is formulated with a high-potency blend of ingredients, including:
- 15% Glycolic Acid Complex: This alpha hydroxy acid (AHA) works to exfoliate the skin's surface, removing dead skin cells and revealing a brighter complexion. It is noted to be a higher concentration than typically found in other prestige brands, offering a powerful resurfacing effect.
- 1.5% Time-Released Micro-Encapsulated Retinol: Retinol is a derivative of Vitamin A known for its ability to accelerate cell turnover, stimulate collagen production, and improve the appearance of fine lines and wrinkles. The time-released formula ensures gentle yet effective resurfacing throughout the night, minimizing potential irritation.
- Niacinamide: Also known as Vitamin B3, niacinamide helps to improve skin elasticity, enhance the skin barrier function, and reduce the appearance of pores and uneven skin tone.
- Allantoin and Adenosine: These ingredients are included to help soothe the skin, reducing potential irritation from the active ingredients.
- Hyaluronic Acid: This humectant attracts and retains moisture, helping to keep the skin hydrated and plump, counteracting the potential dryness associated with retinol and glycolic acid.

User Experiences and Results
Reviews for the Peter Thomas Roth Even Smoother Glycolic Retinol Resurfacing Serum highlight a range of positive outcomes, with many users experiencing noticeable improvements in their skin.
Addressing Dark Spots and Hyperpigmentation
Several users reported success in fading dark spots and areas of skin darkening. One user mentioned that their husband's skin darkening, caused by Ichthammol ointment, began to improve after two weeks of using the serum. Similarly, personal dark spots also became lighter with consistent use.
Improving Skin Texture and Clarity
The serum is praised for its ability to improve skin texture and reduce breakouts. Users with sensitive skin found that the serum did not cause irritation, which is a common concern with potent exfoliating ingredients. The combination of glycolic acid and retinol was effective in improving skin texture and keeping hormonal acne at bay for some.
Minimizing Fine Lines and Wrinkles
While some users noted that significant changes in fine lines take time, others observed a slight difference in their forehead fine lines and an overall fresher, more balanced skin appearance within three weeks of nightly use. The serum is seen as a tool to help "age more gracefully."
Comparison with Other Retinol Products
Users who have tried other retinol products found that the Peter Thomas Roth serum does not cause the dryness or tacky feeling often associated with them. It was noted that this product does not lead to flaky, dry skin or irritation, even after several weeks of use, making it a preferred option for many.
Combination with Other Products
The serum is often used in conjunction with other products from the Peter Thomas Roth Even Smoother collection, such as the Even Smoother Glycolic Retinol Resurfacing Peel Pads. This combination is described as powerful, especially for those suffering from skin texture issues. The peel pads, containing a higher concentration of glycolic acid and retinol, are recommended for moments when extra exfoliation is needed, such as around a period or after wearing heavy makeup.
Sensory Experience
While the serum is generally well-received for its efficacy, one user mentioned a dislike for the "paint-like" smell, describing it as feeling "unhealthy" to apply. However, this appears to be an isolated concern, as other reviews focus on the product's performance.

How to Use
Peter Thomas Roth recommends the following application guidelines:
- Initial Use: Apply nightly. If mild irritation or redness occurs, reduce usage to every other night until your skin adjusts. Gradually build up to nightly use.
- Daytime Protection: Always use SPF protection during the day, as the product contains alpha hydroxyl acid (AHA) which can increase sun sensitivity and the risk of sunburn.
- External Use Only.
The brand suggests a slow introduction to the serum, applying it every other night initially until the skin builds tolerance to the formula. This approach is particularly important for those with sensitive skin.
Formulation and Concentration
The Peter Thomas Roth Even Smoother Glycolic Retinol Resurfacing Serum is formulated with a substantial 15% Glycolic Acid Complex and 1.5% time-released micro-encapsulated retinol. This potent combination is designed to visibly improve skin texture, clarity, tone, and reduce the appearance of fine lines and wrinkles. The retinol's gradual release mechanism ensures it works effectively throughout the night.