Peter Thomas Roth Max Mineral Naked Broad Spectrum Spf 45 (Discontinued)
Peter Thomas Roth Max Mineral Naked Broad Spectrum SPF 45 is an all-mineral sunscreen designed to provide high-level UV protection with a lightweight, skin-like finish. Formulated with a significant 19.24% Zinc Oxide and 1.93% Titanium Dioxide, this product offers robust broad-spectrum defense against UVA and UVB rays without relying on chemical filters. The 'Naked' name refers to its sheer application, facilitated by ingredients like C9-12 Alkane and Butyloctyl Salicylate, which help the mineral powders spread evenly across the skin. Although this specific formula has been discontinued, it remains a benchmark for physical sunscreens that avoid the heavy, greasy feel typical of many mineral products. It was highly regarded for its ability to provide a matte-to-natural finish that worked well under makeup. Additionally, the inclusion of silica and antioxidants helped to blur imperfections while protecting the skin barrier from environmental stressors, making it a versatile step in any daytime skincare routine.
Our Analysis
Our analysis of the Peter Thomas Roth Max Mineral Naked Broad Spectrum SPF 45 confirms a low comedogenic risk level. The formula is primarily powered by mineral blockers, which are generally non-irritating for acne-prone skin. We flagged two ingredients: Cetyl Alcohol and Stearic Acid. Both carry a rating of 2/5, indicating a low-to-moderate risk of clogging pores. These are fatty alcohols and acids used to stabilize the emulsion and improve the product's texture. While generally safe for most, individuals with exceptionally reactive skin or a history of sensitivity to fatty alcohols should monitor their skin for any signs of congestion.
Skin Type Recommendations
This sunscreen is best suited for sensitive, combination, and acne-prone skin types due to its mineral-based UV filters. The low comedogenic profile makes it a safe choice for those avoiding breakouts. Oily skin types will appreciate the lightweight texture, though very dry skin may require an additional moisturizer underneath.
Flagged Ingredients
A fatty alcohol (emollient) that is generally safe, but can be problematic for very sensitive individuals.
Found in many butters; thickening agent with low-moderate risk.
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.
