Auteur Definitive Line Serum 1 fl oz

Precision peptide serum that smooths expression lines & refines texture

The AUTEUR Definitive Line Serum is a next-generation peptide treatment designed to reduce visible expression lines and improve skin firmness. Combining neurotransmitter-inhibiting peptides like SYN®-AKE with Gold Pro-Collagen Peptide, it helps relax micro-tension while stimulating collagen renewal for smoother, stronger skin. Liquid Oxygen technology enhances cellular energy and repair, while Ergothioneine and Niacinamide defend against oxidative stress. The lightweight, silky texture absorbs quickly, making it ideal for daily use under moisturizer or SPF.

Engineered in Germany within AUTEUR’s “Definitive” collection, this serum focuses on precision line correction and rejuvenation. Regular use helps visibly soften crow’s-feet, forehead creases, and nasolabial folds while boosting overall skin resilience. Bioactive peptides and antioxidants encourage a firmer, more even complexion without irritation or heaviness. Suitable for all skin types, especially those experiencing early signs of aging or dynamic expression lines.

• Who it’s best for: All skin types with fine lines or dynamic wrinkles seeking smoother, firmer texture
• What makes it different: Dual peptide complex with oxygen technology for targeted smoothing and long-term collagen support

Due to manufacturer updates, packaging may vary from the image shown. Please note the product formulation remains the same.