Peter Thomas Roth Professional Strength 3% Retinoid Plus
Peter Thomas Roth Professional Strength 3% Retinoid Plus is a high-performance anti-aging treatment formulated to target fine lines, wrinkles, and skin texture. The formula features a 0.3% concentration of Hydroxypinacolone Retinoate, a potent retinoid ester known for delivering results with less irritation than traditional retinol. Based on the primary ingredients, including Cyclopentasiloxane and Dimethiconol, this product has a silky, silicone-based texture that provides a smooth, breathable finish on the skin. It utilizes Dimethyl Isosorbide to enhance the delivery of active ingredients, ensuring deep penetration. While the brand is synonymous with professional-grade results, the inclusion of specific emollients like Tocopherol (Vitamin E) adds a layer of antioxidant protection. This product is designed for those seeking to bridge the gap between over-the-counter retinol and prescription-strength treatments, though users with congestion-prone skin should review the base ingredients carefully to ensure compatibility with their specific pore needs.
Our Analysis
Our analysis classifies this Peter Thomas Roth retinoid as having a Moderate comedogenic risk. We flagged three specific ingredients: tocopherol, stearic acid, and cetyl alcohol, all of which carry a 2/5 rating on the comedogenic scale. Tocopherol (pure Vitamin E) is a thick antioxidant that can be sticky and potentially clogging in certain formulations. Stearic acid and cetyl alcohol are common fatty acids and alcohols used for texture; while they are generally well-tolerated, their presence means this product isn't entirely 'acne-safe' for those with highly reactive or easily congested pores. However, the silicone-heavy base helps mitigate some of this risk.
Skin Type Recommendations
This retinoid is best suited for mature, dry, or combination skin types focused on anti-aging and smoothing. Because it contains stearic acid and tocopherol, individuals with oily or severely acne-prone skin should use it with caution or perform a patch test to ensure it does not cause closed comedones.
Flagged Ingredients
Pure Vitamin E is thick and sticky; safe in small amounts as an antioxidant, but potentially clogging in pure oil form.
Found in many butters; thickening agent with low-moderate risk.
A fatty alcohol (emollient) that is generally safe, but can be problematic for very sensitive individuals.
Want Deeper Analysis?
Run our MACR (Multi-Axis Comedogenic Risk) analysis to get a comprehensive 5-axis risk assessment. This AI-powered analysis evaluates ingredients for Plugging Risk, Barrier Damage, Fungal Acne Risk, Oxidation Risk, and real-world User Reports — giving you personalized scores for your skin type.
