Peter Thomas Roth Retinol Fusion PM Night Serum — 1.5% Microencapsulated Retinol, Time-Release Hydrating Treatment

A concentrated 1.5% microencapsulated retinol night serum that releases retinol slowly through the night to target fine lines, uneven tone, texture and dullness while providing hydration.

Peter Thomas Roth Retinol Fusion PM Night Serum is a time-release retinol treatment formulated for nightly use. The microencapsulation technology delivers retinol gradually to reduce irritation while supporting skin renewal. Enriched with antioxidant vitamins, the lightweight serum aims to improve texture, minimize the look of lines and restore visible radiance without overdrying the skin.

How does the microencapsulated retinol work overnight?

The microcapsules hold retinol and release it slowly over several hours, offering a steady dose instead of a single strong surge. This controlled delivery helps maximize retinol’s benefits while reducing the chance of irritation for many users.

• Time-release 1.5% retinol concentration for prolonged action
• Microencapsulation moderates absorption to support tolerability
• Designed for nightly application to coincide with skin’s natural repair cycle

Will this serum hydrate or dry my skin?

Although retinol can be drying for some formulas, this serum includes moisturizing and antioxidant ingredients to help maintain skin comfort. It is formulated to hydrate and soothe while delivering retinol’s renewing effects.

• Contains vitamins C and E to support antioxidant protection
• Moisturizing base to reduce tightness and flaking
• Suitable for layering under a night cream or oil for extra hydration

How quickly will I notice improvements in lines, tone and texture?

Visible benefits tend to appear gradually as cell turnover and collagen-related changes accumulate over weeks. Many users observe smoother texture and more even tone after consistent nightly use for several weeks, with continued improvement over time.

• Initial smoothing often seen within weeks with regular use
• More substantial changes in fine lines and tone may take 8–12 weeks
• Continuous nightly use supports long-term radiance and texture improvement

How should I incorporate this serum into my routine to reduce sensitivity?

Introduce the serum gradually, starting with every-other-night use if you’re new to retinol. Pair it with gentle cleansing and a hydrating moisturizer, and always apply sunscreen during daytime to protect renewed skin.

• Begin with 2–3 nights per week, increasing as tolerated
• Apply after cleansing and before moisturizer in your evening routine
• Use daily broad-spectrum SPF in the morning to protect treated skin

Who this is for: This serum is designed for people seeking a potent, clinically minded retinol treatment that balances strength with tolerance—ideal for those targeting fine lines, uneven tone, rough texture and diminished radiance. It works well for a range of skin types, including combination and normal skin, and for anyone comfortable introducing retinol with appropriate sun protection and gradual build-up. If you have highly reactive skin or are pregnant or breastfeeding, consult a dermatologist before use.