Proline

CAS: 147-85-3 (L-) / 609-36-9 (dl-alpha) · EC: 205-702-2 / 210-189-3
Skin Conditioning
CosIng Ref: 78685
💡 For reference only. Does not constitute medical advice.
Description
This amino acid serves as a skin conditioning agent that helps maintain skin hydration and supports the skin's natural barrier function. It works by attracting and retaining moisture while contributing to the structural integrity of skin proteins. The ingredient has an excellent safety profile with minimal risk of irritation or adverse reactions.
Synonyms
프롤린 (ko) プロリン (ja) 2-Pyrrolidinecarboxylic acid, (S)- L-Proline proline
Properties
✗ Fragrance ✗ Preservative ✗ Colorant
Safety Rating
INTERNAL 1/10 · Very Safe
Amino acid — naturally occurring, very safe

Found in products

Total: 717
Product Brand Occurrences
Revolution Superfix Grip Primer Revolution 2
ROOTON Alpha Erguen Shampoo 500mL ROOTON 2
Salon.Zip Scalp Renewing Water Treatment 200ml Salon.Zip 2
SALT & STONE Black Rose & Oud Hand Cream 60ml SALT & STONE 2
SALT & STONE Santal & Vetiver Deodorant SALT & STONE 2
Sculpted By Aimee HydraTint 30ml Sculpted by Aimee 2
Seapuri Dr. 33 Hair Ampoule 20ml Seapuri 2
Silk Therapy Heat Enhancer Hair Milk 150ml Silk Therapy 2
Skin U INNO:SCENT Deep Musk Body Oil 130ml Set (+Body Guasha) Skin U 2
Skin U INNO:SCENT Shower Gel 500g (EAU DE FLORAL/SUNSET ORANGE) 2 Options To Choose Skin U 2
Sons DHT-Blocking Hair Strengthening Conditioner 200ml Sons 2
Summer Fridays Sweet Pink Duo - Lip Butter Balm Set 2x 15ml + 2ml Summer Fridays 2
SUNGBOON EDITOR Deep Collagen Barrier Serum Mist 95ml SUNGBOON EDITOR 2
SUNGBOON EDITOR Deep Collagen Retinol Power Boosting Capsule Cream 50g SUNGBOON EDITOR 2
SUNGBOON EDITOR Green Tomato Deep Pore Cleansing Ultra Whipping Foam 120g SUNGBOON EDITOR 2
Supple Preparation Facial Toner Klairs 2
Take Care Healthy Hair Shampoo Eva Nyc 2
The Daily Set The Ordinary 2
The Mini Icons Limited Edition Skincare Gift Set featuring Glycolic Acid The Ordinary 2
The Ordinary Multi-Peptide + Hyaluronic Acid Serum for Aging Skin - 30ml The Ordinary 2
The Ordinary Rice Lipids And Ectoin Microemulsion For Dry And Dehydrated Skin 60ml The Ordinary 2
The Ordinary The Age Support Gift Set for Fine Lines and Wrinkles The Ordinary 2
The Ordinary The Clear Set The Ordinary 2
The Perfect Cosmetics Company - My Perfect Day Cream - 50ml The Perfect Cosmetics Company 2
Torriden Cellmazing Firming Eye Cream 30mL Special Set (+Eye Massager) Torriden 2
Torriden Cellmazing Firming Gel Mask Sheet 4ea Torriden 2
Treecell Day Collagen Shampoo #Morning of Resort Refill Set (+Refill 360ml) Treecell 2
Ultra Light Styling Cream + Wand KRISTIN ESS HAIR 2
Ultra Violette Fave Fluid Ultralight Skinscreen SPF50+ 75ml Ultra Violette 2
UNOVE Deep Damage Repair Shampoo 500g Double Set (3 Options) UNOVE 2
VT Cica Daily Soothing Mask (30 sheets) VT Cosmetics 2
VT PDRN Reedle Shot Hair Ampoule 15ml (3 options) VT 2
VT Reedle Shot 100 Serum 50ml VT 2
Wild Marula™ Tangle Spray Drunk Elephant 2
withbecon Give Me Water Blended Shampoo 360ml Withbecon 2
[+100ml] ROUND LAB 1025 Dokdo Cleanser 250ml ROUND LAB 1
1025 Dokdo Cleansing Oil ROUND LAB 1
★2025 Awards★ Seapuri Dr.33 Hair Ampoule 20ml Limited Triple Set Seapuri 1
24-7 Power Swipe Hydrating Day & Night Treatment Eye Balm TULA 1
2-Step Lash System Set Grande Cosmetics 1
3-In-1 Leave-In Conditioner Divi 1
5ENSE Hair Wet 100ml 5ENSE 1
7th Heaven Aloe Glow Hydrating Sheet Mask 7th Heaven 1
7th Heaven Firming & Renewing Retinol Serum Sheet Mask 7th Heaven 1
7th Heaven Gentle Exfoliating Foot Peel Socks 7th Heaven 1
Acwell Licorice pH Balancing Cleansing Toner 300mL Acwell 1
Acwell Real Aqua Balancing Toner 160ml Acwell 1
AESTURA ATOBARRIER365 Hydro-Essence - Hydrating essence to support the moisture barrier 200ml AESTURA 1
AF1 Restructuring 10-in-1 Leave-In Conditioner Andrew Fitzsimons 1
AGE20’s Silky Fixing Pact 14g AGE 20's 1
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