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Surfactants and surface-active agents – the basis of the cleansing, foaming and washing power of formulations

The surfactants, surface-active agents category covers non-ionic, amphoteric and anionic components that provide foam formation, degreasing, emulsification and cleansing efficacy in shampoos, shower gels, body and facial cleansers, as well as mild baby products.

The range includes sugar-based non-ionic APG for gentle cleansing, amphoteric “mildness enhancers” to reduce harshness, modern anionic surfactants with low irritation, as well as classic SLES systems and powder surfactants for syndet bar formulations. With the right combination you achieve the desired foam, viscosity and tolerability for different skin and hair types.

Practical tip: plan the surfactant system according to the target pH, the desired foam performance and viscosity and the selected salt profile (salt curve). Amphoteric surfactants typically increase viscosity and reduce the harshness of the system.

Non-ionic sugar surfactants (APG)

Decyl, Coco/Koko, Lauryl and Caprylyl/Capryl glucosides provide mild, skin-tolerant cleansing with good foam formation and compatibility over a broad pH range. They are suitable for gentle shampoos, shower gels and facial cleansers. Mild, biodegradable and compatible surfactants for everyday use. See Decyl glukozid, Coco/Koko glukozid, Lauryl glukozid and Caprylyl/Capryl Glucoside.

Amphoteric surfactants (harshness reduction and better viscosity)

Amphoteric substances reduce the irritation of anionic surfactants, improve foam formation and help to build the viscosity of the system. Suitable for shampoos, shower gels and children’s formulations. Increased mildness, more stable foam and easier thickening with salt. We recommend Cocamidopropyl Betaine, Coco Betaine and Sodium Cocoamphoacetate.

Mild anionic surfactants “next-gen”

Modern anionic surfactants provide low harshness with good cleansing – suitable for “mild” shampoos, “daily wash” shower gels and sensitive formulations. Balancing cleansing power and tolerability for skin and scalp. See Sodium Lauroyl Sarcosinate, Disodium Cocoyl Glutamate, Sodium Methyl Oleyl Taurate and Disodium 2-Sulfolaurate.

Classic anionic systems (SLES)

SLES offers high foam and excellent degreasing power with a good price/performance ratio; suitable for shampoos, shower gels and liquid soaps. The presence of an amphoteric surfactant significantly improves tolerability and viscosity. Proven base with the option of gentle, tailor-made “tuning”. Available as SLES 26 % and SLES 70 %.

Powder surfactants for syndet bars and shampoo bars

Powder anionic surfactants provide a solid format with rich foam and good cleansing; suitable for shampoo bars, shower bars and travel products. Strong foam without water in the packaging – ideal for travel and zero-waste concepts. We recommend Sodium Cocoyl Isethionate (SCI), Sodium Lauryl Sulfoacetate (SLSA), Disodium Lauryl Sulfosuccinate (DLSS) and Eucarol Easy MB.

“Conditioning” and wetting agents – smoothing, slip and comfort

Additives for a softer feel and better skin compatibility; they reduce harshness, improve the sensory profile and support stable foam. Smoother touch, less drying and more pleasant application. Try Lamesoft PO 65, Proteol Apple and TEGOSOFT LSE.

Special surfactants and for industrial cleaning

For technical and household cleaning, selected APG with high stability and good degreasing are suitable. Effective cleansing power with good biodegradability. See Glucopon 50 G APG.

FAQ – Frequently asked questions

How to combine surfactants for a balance of mildness and cleansing power?

Use an anionic surfactant as the base (e.g. SLES or a modern anionic), add an amphoteric (Cocamidopropyl Betaine) to reduce harshness and 1–2 non-ionic APG to improve foam and compatibility. Adjust dosages according to the target and the salt curve.

How to control viscosity and the “salt curve” in shampoos?

Build viscosity by gradually dosing NaCl during mixing, optionally adding an amphoteric surfactant or a thickener. Monitor the maximum point – overdosing salt again reduces viscosity. Each system has its own curve; test in small steps.

When to choose “next-gen” anionics instead of SLES?

When the goal is lower irritation while maintaining good foam and cleansing, or for products intended for sensitive skin/children. Sarcosinate, Cocoyl Glutamate, Taurate or Sulfolaurate provide a better tolerability profile with proper formulation.

How to create a syndet bar with SCI/SLSA?

Combine powder surfactants (SCI/SLSA/DLSS) with fatty alcohols or waxes and emollients to obtain a compact bar. Control the temperature, disperse the powders evenly and fine-tune hardness/foam via the ratios between anionics and emollients.

How to reduce the “harshness” of a wash product without losing cleansing?

Include an amphoteric surfactant (Cocamidopropyl Betaine), replace part of the anionic phase with APG, add a re-fatting component (e.g. Lamesoft PO 65) and work at pH 5–5.5. The blend should be synergistic; adjust dosage according to the target group and stability.