Hydroxysultaine & CAPB — Amphoteric Surfactants

What is Hydroxysultaine & CAPB — Amphoteric Surfactants?

Hydroxysultaine and CAPB (cocamidopropyl betaine) are the two most searched amphoteric surfactants for rinse-off cleansers. Amphoteric surfactants carry both positive and negative functional groups and exhibit charge that depends on solution pH. At formulation pH typical of personal care (5.0–6.5), betaines and…

What is Hydroxysultaine & CAPB — Amphoteric Surfactants used for?

Hydroxysultaine (also called a sultaine) is a zwitterionic amphoteric surfactant with a sulfonate head group instead of the carboxylate found in classic betaines. The most common grade is cocamidopropyl hydroxysultaine (INCI: Cocamidopropyl Hydroxysultaine). Because the sulfonate remains charged across a wider… Venus Ethoxyethers manufactures and supplies in India; request a quote for your requirements.

Hydroxysultaine and CAPB (cocamidopropyl betaine) are the two most searched amphoteric surfactants for rinse-off cleansers. Amphoteric surfactants carry both positive and negative functional groups and exhibit charge that depends on solution pH. At formulation pH typical of personal care (5.0–6.5), betaines and amphoacetates exist as zwitterions compatible with anionic primaries such as SLES and LAS. Venus Ethoxyethers is a CAPB manufacturer in India and amphoteric surfactants supplier supporting formulators with mild cleansing, foam boosting, and electrolyte-tolerant cleaner systems — including cocamidopropyl hydroxysultaine for high-salt dish and I&I liquids.

What is hydroxysultaine?

Hydroxysultaine (also called a sultaine) is a zwitterionic amphoteric surfactant with a sulfonate head group instead of the carboxylate found in classic betaines. The most common grade is cocamidopropyl hydroxysultaine (INCI: Cocamidopropyl Hydroxysultaine). Because the sulfonate remains charged across a wider electrolyte range, hydroxysultaine tolerates 4–8% sodium chloride or benzoate builder systems while maintaining foam with LAS or SLES at 2–5% active — conditions where CAPB often salts out or loses viscosity.

Hydroxysultaine vs CAPB

CAPB remains preferred in mass-market shampoo chassis for cost and foam creaminess. Choose hydroxysultaine when salt load is high or when CAPB viscosity collapses in the formula. Read the amphoteric surfactants / hydroxysultaine guide for full formulation examples.

Cocamidopropyl betaine (CAPB) uses in personal care

Cocamidopropyl betaine is the industry-standard amphoteric co-surfactant in shampoos, body washes, facial cleansers, and baby washes. Typical use levels are 2–6% active alongside SLES, isethionates, or glucosides. CAPB boosts foam creaminess, reduces anionic irritation, improves salt-thickened viscosity, and bridges anionic–cationic compatibility in 2-in-1 conditioning shampoos. Venus supplies CAPB as a Cocamidopropyl Betaine manufacturer for B2B personal-care and HI&I customers seeking consistent active content and low free-amine residual.

Common amphoteric types

• Betaines — cocamidopropyl betaine (CAPB), lauryl betaine; foam boost and mildness in shampoos (2–6% active)
• Amphoacetates — sodium cocoamphoacetate, disodium cocoamphodiacetate; extra-mild baby and sensitive-skin cleansers
• Hydroxysultaines — cocamidopropyl hydroxysultaine; high-salt dish and institutional cleaners (2–5% active)
• Amine oxides — foam stabilizers in alkaline hard-surface and dish formulations

Dishwashing and HI&I use

Hand dishwashing liquids typically use SLES or LAS with CAPB or hydroxysultaine for foam creaminess and mildness. Example high-salt chassis: 10% LAS or SLES + 3% cocamidopropyl hydroxysultaine + 2% laurylamine oxide + 4–8% salt/builder. Machine dishwashing and CIP systems need lower foam — see dishwashing surfactants and homecare chemicals.

Typical blend systems

• SLES + CAPB shampoo — 10–12% SLES + 3–5% betaine + salt viscosity build
• SLES + cocamide MEA + CAPB — enhanced foam stability and viscosity
• Pearlizing shampoo blend — glycol distearate + laureth-3/9 with SLES and CAPB
• Sulfate-free syndet — CAPB + glucoside + sodium methyl cocoyl taurate
• Mild SLES + CAPB + lauryl glucoside — sulfate-reduced cleansing

See all personal care surfactant blends and hair conditioning chassis platforms.

Related Venus products

Explore co-surfactants & emulsifiers, detergent bases, personal care foaming agents, and viscosity builders for complete rinse-off systems. Pair with anionic surfactants and nonionic surfactants per your foam and mildness targets.

Technical resources

Read the amphoteric surfactants guide for hydroxysultaine formulation examples, CAPB quality notes, and salt-curve optimization. See also personal care surfactants guide and surfactant types comparison. Contact Venus for hydroxysultaine or CAPB samples and blend recommendations.