Peter Thomas Roth Lashes To Die For Turbo Nighttime Eyelash Treatment. With its restorative Peptide Complex and biotin-enriched formula, this treatment improves the appearance of sparse eyelashes helping boost length, thickness, and fullness.Key Ingredients:11% Peptide Complex & Biotin: helps boost the appearance of longer, thicker, and fuller-looking lashes10% Conditioning Complex: moisturizes and softens lashesTahitian Plankton Extract: enhances the appearance of dry, brittle lashesKey Benefits:Enhances the length of lashesFortifies and thickens lashesNourishes and softens