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An essential amino acid that's also a key building block of collagen and elastin. When taken orally, it helps the digestive and intestinal tracts function more smoothly and also helps the absorption of nutrients. As for skincare, it is not clear what it does other than being a skin hydrator

Products with Threonine

Peter Thomas Roth Unisex Neuroliquid Volufill Youth Serum Pacifica Clean Shot Vegan Amino Acid 10% Complex Acure Resurfacing Amino Acid Serum Easydew Daily Double Hydra Toner With Serine Of N.M.F Indeed Labs Microbiome Essence Mary Kay Lash & Brow Building Serum Mask Moments It’s Your Birthday Mira Dror Mattifying Balm Peter Thomas Roth Peptide 21 Amino Acid Exfoliating Peel Pads 24 K Donna Bella Collagen Radiance Renewal Serum Bliss Moisture Intensifier Hyaluronic Acid Facial Comme Deux Serum Booster Pore Refining & Mattifying Leaders Mediu Amino Moisture Mask Matsuyama M-mark Amino Acid Infusion Lotion Matsuyama M-mark Amino Acid Moisturising Lotion Copenhagen Grooming The Activator Dermexcel Acne Repair Serum MEDI-PEEL Aesthe Derma Red Marine Collagen Toner Mira Dror Suero Hidrasystem Monat Lash & Brow Enhancing Serum Natur Vital Coloursafe Black Hair Mask Natur Vital Coloursafe Chesnut Hair Mask Regaliz Folirich Hair Growth Serum Atypical Skincare Glow Tonic Icon Skin 12 Herbs Toner Janssen Cosmetics Clarifying Cleansing Gel Leaders Amino Lifting Mask Milbon Jemile Fran Melty Butter Balm Minon Amino Moist Mask Murad Essential-C Toner Pacifica Cosmic Hemp Balancing Face Wash AMT skincare Deep Essence Mist Apivita Hair Loss Lotion Bliss Disappearing Act Pore Shrink & Blur Serum Circadia Revita-Cyte Complex Deliplus Equilibrio Serum Sebo-regulador Fruto Salvaje Hair Loss Tonic Capilar Anticaida GLOWFULLY Healing Elixir H20+ Gel Cleanser H20+ Hydration Oasis Refreshing Gel Moisturizer La sciampista Luce Olay Quench Daily Body Lotion Swissvita Skin Regenerating Vital Essence The Ordinary Amino Acids + B5 The Ordinary Marine Hyaluronics the Cocoon The Cocoon Rose Serum Aminu The Azure Copper Peptide Serum Ausceuticals Peptide Moisturiser Brickell Men's Products Daily Strengthening Shampoo For Men Eaoron Hyaluronic Cleanser