6 Best Peter Thomas Roth Products That Are Like a Facial in a Bottle QVC Steal: Get $102 Worth of Peter Thomas Roth Skin Care for Just $20 Peter Thomas Roth Instant FIRMx No Filter Primer, Instant Skin Amazon.com: Peter Thomas Roth: Skin Care. This gentle, time released form of Glycolic Acid in a rich moisturizing formula helps produce a beautiful, fresh and youthful looking complexion. Advanced chemical exfoliation helps improve the appearance of fine lines, wrinkles, brightness, clarity, uneven skin tone, pores and smoothness. BENEFITS: Fine lines and wrinkles Dullness and uneven texture HOW TO USE: Using fingertips, gently apply a thin layer to face. May also be used on neck, chest, area and tops of hands. Use daily. For external use only.