Kiehl's Amino Acid Conditioner — Strengthening & Moisturizing 1 L Refill, Lightweight Daily Conditioner for All Hair Types

Kiehl's Amino Acid Conditioner is a lightweight, daily rinse-out treatment formulated with amino acids, jojoba oil, and coconut oil to strengthen, hydrate, and improve manageability for all hair types.

This 33.8 fl oz (1 L) refill size provides salon-style conditioning at home, offering a creamy texture that smooths onto wet hair without weighing it down. Designed to be used after shampooing, the formula focuses on strengthening strands from within while delivering moisture and shine on the surface. Its gentle profile makes it suitable for frequent use and for a wide range of hair textures, from fine and straight to curly and thick.

How does this conditioner help hair feel stronger and less prone to breakage?

The formula includes amino acids, building blocks that support the hair’s internal structure, helping strands resist stress and mechanical damage. Strengthening is achieved by reinforcing weakened fiber and smoothing the cuticle, which reduces tangles and friction during styling.

• Amino acids fortify fiber to reduce breakage.
• Cuticle-smoothing action lowers friction and tensile stress.
• Regular use helps hair hold up better to brushing and heat styling.

Will this conditioner add moisture without leaving hair heavy or greasy?

Yes — the blend of coconut oil and jojoba oil supplies nourishing lipids while the lightweight creamy base avoids buildup. These emollients provide hydration and surface softness, but are balanced so hair retains bounce and movement rather than feeling weighed down.

• Coconut oil delivers fatty acids that lock in moisture along the shaft.
• Jojoba oil mimics natural sebum, softening without excess residue.
• Non-greasy texture rinses clean for a fresh finish and added shine.

How should I use this 1 L refill for best results?

After shampooing, distribute a generous amount from mid-lengths to ends, leave on for about two minutes, then rinse thoroughly. For optimal performance, pair with the Kiehl's Amino Acid Shampoo and follow a consistent routine tailored to your hair’s needs.

• Apply to wet hair after shampooing, focusing on mid-lengths and ends.
• Let sit for roughly two minutes before rinsing fully.
• Use regularly and combine with the matching shampoo for stronger results.

Is this conditioner suitable for color-treated or delicate hair?

The gentle formulation is mild enough for frequent use and generally compatible with color-treated or chemically processed hair. It helps nourish and smooth the fiber without harsh cleansing agents, though patch testing or consulting your stylist is recommended for recently treated or fragile hair.

• Mild, balanced formula designed for everyday conditioning.
• Hydrating oils help restore softness to processed strands.
• Use with care on freshly colored or chemically treated hair as advised by your stylist.

Who is this for: This 1 L refill of Kiehl's Amino Acid Conditioner is ideal for anyone seeking a dependable, everyday conditioner that strengthens and hydrates without heaviness — a good choice for households, salon use, or individuals who prefer larger-format products. It's suited to all hair types that need improved manageability, added shine, and a gentle conditioning boost in a single, easy-to-use formula.

Ingredients

AQUA / WATER • CETYL ALCOHOL • BEHENTRIMONIUM CHLORIDE • CETYL ESTERS • ISOPROPYL ALCOHOL • CITRIC ACID • PHENOXYETHANOL • MYRISTYL ALCOHOL • PARFUM / FRAGRANCE • SIMMONDSIA CHINENSIS SEED OIL / JOJOBA SEED OIL • COCOS NUCIFERA OIL / COCONUT OIL • ALOE BARBADENSIS LEAF JUICE • GLYCINE SOJA OIL / SOYBEAN OIL • TOCOPHEROL • CHLORHEXIDINE DIHYDROCHLORIDE • HYDROXYPROPYLTRIMONIUM HYDROLYZED WHEAT PROTEIN • WHEAT AMINO ACIDS • SODIUM CHLORIDE • COUMARIN • POTASSIUM SORBATE • DISODIUM EDTA • SODIUM BENZOATE