Modern hair care: how trends shape the selection of raw materials in hair care?
Contemporary hair care is about much more than basic cleansing. It now involves advanced scalp care and protection against environmental pollutants. If you are wondering how to translate consumer-driven market expectations into laboratory work and develop a safe product, you are in the right place. See how to select raw materials to build a stable formulation.
Defining the paradigm shift in hair care
Traditional cleansing of the hair and scalp, based on aggressive sulphates, is increasingly giving way to multidimensional physicochemical systems. Today, 77% of consumers are looking for cosmetic products that combine an immediate effect with safety for the scalp and the environment.
For product development and implementation teams, this means the need to map formulation challenges precisely and quickly match them with the right raw materials.
Market trend | Consumer challenge and pain point
| Technological requirements
| Recommended solution |
Scalp care
| Microbiome imbalance, irritation, inflammation, dandruff, disrupted hydrolipid barrier and excessive sebum production
| Reducing the irritation potential of the cleansing base. Creating large micelles that do not penetrate the stratum corneum. Incorporating ingredients known from facial skin care | Ultra-mild amino acid and non-ionic surfactants:
NEOPAL APG 100 (Decyl Glucoside) NEOPAL APG 200 (Lauryl Glucoside) LAUCOSOL TGT-30 H (Sodium Cocoyl Glutamate) |
Deep repair | Dryness, roughness, breakage, increased porosity, loss of shine and elasticity | Supporting the restoration of the lipid layer, improving slip, controlling the deposition of conditioning ingredients and balancing the surface charge of the hair fibre | Cationic polymers, lightweight emollients and fatty alcohols:
PANGUAR/NEOMIN/CESTOPAL |
Urban protection | Hair dullness, pollutant deposition, increased roughness and greater susceptibility to environmental damage
| Creating a lightweight film on the hair fibre, reducing surface energy for an anti-adhesive effect and building stable antioxidant systems
| Stable antioxidants, beta-glucans, algae-derived ingredients and film-forming raw materials that create a protective barrier on the hair fibre |
Hard water protection | Roughness caused by so-called soap scum, deposition of calcium and magnesium salts, loss of elasticity and fibre breakage | Reducing the impact of calcium and magnesium ions, maintaining stable foam and limiting deposit build-up on the hair fibre | Modern, safe plant-based chelating agents, such as phytic acid, and dispersing agents that bind minerals from hard water |
Sensorial profile and formulation stability | Heavy application, weighing down fine hair, product separation, unstable foam or an unpleasant after-feel after rinsing
| Building a stable rheological structure and controlling viscosity, creaminess, slip and phase compatibility | Proven rheology modifiers and co-surfactants that stabilise the system, such as high-quality betaines – LAUCOSOL) |
Skinification and scalp care: how to reduce the irritation potential of a cleansing base without compromising foam quality?
Designing scalp care shampoos requires a substantial reduction in the irritation potential of traditional surfactant systems. The main laboratory challenge is to reduce the aggressiveness of the cleansing base towards the epidermal barrier while maintaining system stability, appropriate viscosity and foam quality, which remains an important signal of product efficacy for consumers.
Critical micelle concentration (CMC): how does micelle size help protect the skin’s hydrolipid barrier?
Conventional, strong surfactants can penetrate the epidermis, washing out structural lipids and disrupting the skin microbiome. The key to protecting the scalp is control over the critical micelle concentration (CMC – Critical Micelle Concentration).
CMC is the point at which individual surfactant monomers begin to aggregate into larger structures known as micelles. While small, individual molecules can easily penetrate the stratum corneum and potentially trigger inflammation, larger, more developed micelles are too large to disrupt the hydrolipid barrier. As a result, they effectively bind impurities on the surface without penetrating deeper into the skin. Through the precise selection of co-surfactants, the formulator can influence the size of these structures and reduce the irritation potential of the cleansing base already at the washing stage.
Ultra-mild amino acid surfactants and polyglucosides in formulation practice
The transition towards large-micelle technology requires the use of non-ionic polyglucosides and anionic amino acid surfactants which, when combined with betaines, help reduce the irritation potential of the cleansing base.
Decyl Glucoside (NEOPAL APG 100), a non-ionic co-surfactant that lowers the irritation index of anionic surfactants, also supports foam volume development.
Lauryl Glucoside (NEOPAL APG200), a non-ionic polyglucoside with thickening properties helps build viscosity in sulphate-free cleansing bases, which is important when designing stable shampoos with a pleasant sensory profile.
Sodium Cocoyl Glutamate (LAUCOSOL TGT-30 H), an anionic amino acid surfactant, combines a milder profile with strong cleansing performance. In the presence of sebum, it generates a stable, creamy foam and improves the sensory profile after rinsing.
Degradation of 18-MEA and CMC: how to limit further damage to compromised hair fibres?
Care for deeply damaged hair requires addressing microscopic defects in the hair fibre architecture, going beyond the effect of superficial smoothing. Understanding the physicochemistry of the hair fibre makes it possible to select components precisely, supporting the restoration of the lipid barrier and limiting further mechanical degradation.
Increased porosity and negative zeta potential: why does damaged hair become more hydrophilic?
Thermal, mechanical and chemical treatments can disrupt the F-layer, composed of 18-MEA, as well as the structure of the CMC, the cell membrane complex, leading to increased fibre porosity. Damaged hair loses its lipid barrier, while exposed acidic groups in the proteins generate a strong negative zeta potential. As a result, the fibre becomes more hydrophilic: it absorbs water more easily, swells, loses elasticity and becomes more prone to breakage.
Low-molecular-weight amino acids below 500 Da, proteins and ceramides should be introduced into the cortex. Controlling the pH of the conditioning formulation is also important, often within a mildly acidic range, for example around 3.5-4.5. This supports cuticle closure, improves surface smoothness and reduces hair roughness after rinsing.
Surface conditioning: the architecture of a stable lamellar network
Restoring the surface of the hair fibre requires reconstruction of the lipid layer through the formation of lamellar structures. Synergy in this area is provided by three types of raw materials:
a cationic polymer that adsorbs electrostatically onto areas with an increased negative surface charge: Guar Hydroxypropyltrimonium Chloride (PANGUAR).It forms a durable, smoothing film without weighing the hair down,
a lightweight plant-based ester that acts as an alternative to 18-MEA: Ethylhexyl Stearate (NEOMIN OS). It helps restore hydrophobicity and adds shine, while avoiding the greasiness typically associated with heavier oils,
a fatty alcohol responsible for building a crystalline lamellar network in the oil phase of the emulsion: Cetearyl Alcohol (CESTOPAL 1618 30/70 SC).
Deposition in rinse-off products: how to control the coacervation mechanism?
Designing a shampoo that combines effective cleansing with the deposition of care ingredients requires control over how conditioning components are deposited on the hair surface. In rinse-off products, the key to effective deposition of emollients and oils is precise control of coacervation, a phenomenon that directly determines the sensorial profile and performance of the final formulation.
Shampoo dilution during rinsing: how is a coacervate formed?
During shampoo rinsing with water, the rapid change in concentration triggers coacervation, driven by the interaction between cationic polymers and anionic surfactants. In the concentrated product, the high surfactant concentration helps keep polymers dissolved or dispersed.
After dilution, some polymers may form a coacervate phase with surfactants, showing affinity for the hair surface. The resulting polymer-surfactant complex can deposit on the fibre and support the deposition of conditioning ingredients such as emollients or oils. As a result, a rinse-off product can leave a noticeable effect of smoothness, improved slip and easier combing, without the need to overload the formulation with an excessive oil phase.
Cationic guar vs. cellulose derivatives: the role of molecular weight in film adhesion
Modified cellulose derivatives form thin, rigid films which, at higher concentrations, may lead to a build-up effect. Cationic guar, by contrast, has a much higher molecular weight and long, flexible chains, allowing it to form a softer, more conditioning film. It helps smooth the hair surface, improve slip and reduce friction during both wet and dry combing.
In the Medicos portfolio, this function is supported, among others, by two high-molecular-weight guar gum derivatives. The first is Hydroxypropyl Guar Hydroxypropyltrimonium Chloride (PANGUAR AF-S6) – a high-molecular-weight cationic polymer. It supports the coacervation mechanism, forms a strong polymer network that improves emollient deposition and gives the hair a noticeable smooth feel.
The second is Guar Hydroxypropyltrimonium Chloride (PANGUAR AF-7). This variant is optimised for clear shampoos and lightweight cleansing formulations. It can support the formation of a protective film on the hair surface, improving slip and the sensorial profile of the product without significantly affecting system transparency.
Reducing the impact of environmental stressors through surface energy control
Effective protection of the hair against solar radiation and smog requires a dual approach: supporting antioxidant protection and reducing the adhesion of pollutants to the fibre surface. Through the appropriate selection of film-forming and conditioning ingredients, it is possible to reduce the surface energy of the hair, creating a lightweight protective layer that helps limit the deposition of urban pollutants and supports the fibre in maintaining better condition.
Oxidative hair ageing caused by smog and PM2.5 particles
Particulate matter such as PM2.5 and PM10, as well as smog, ozone and UV radiation, can deposit on the surface of the hair and scalp, promoting oxidative stress. These factors catalyse the generation of free radicals and trigger the photodegradation of amino acids that form keratin. The process of oxidative capillary ageing leads to lipid loss, dullness, increased roughness and greater hair breakage.
Limiting this process requires the use of stable, synergistic antioxidant systems, such as tocopherol derivatives, vitamin E, and stable forms of vitamin C. Their role is to support free radical neutralisation and help protect disulphide bonds in the hair cortex.
Formation of anti-adhesive coatings and friction reduction
Film-forming biopolymers create a thin protective layer on the hair surface, helping to reduce the surface energy of the fibre and limit friction. As a result, PM2.5 and PM10 particles, as well as smog-related pollutants, may adhere less strongly to the hair surface and can be removed more easily during combing or rinsing.
This type of protection is provided, among others, by guar gum derivatives. They help close the hair cuticle and balance the electrical charge of the surface, limiting the penetration of urban pollutants into the cortex. A similar function is also supported by plant-based esters such as Ethylhexyl Stearate (NEOMIN OS). These lightweight emollients smooth the outer hydrophobic zone of the hair fibre and form a thin film that helps reduce direct contact between the fibre and environmental stressors.
At the same time, these raw materials can serve as marketing differentiators and align with macrotrends such as upcycling, clean beauty and circular beauty, making it easier to position the final product as a modern formulation designed to protect hair from everyday environmental exposure.
Hard water protection: how to reduce the impact of Ca²⁺ and Mg²⁺ ions on foam and hair condition?
The presence of mineral salts in hard water can significantly reduce the foaming capacity of standard shampoos and impair their application properties. Understanding the impact of divalent ions on the structure of both the hair fibre and the foam makes it possible to design a stable cleansing base that maintains its full solubilising power even under challenging conditions.
Hair as a cation-binding surface: why does hard water increase fibre roughness?
Porous, damaged hair behaves like a cation exchanger. Free acidic groups in degraded keratin proteins carry a strong negative charge, attracting divalent calcium and magnesium cations present in hard water. These ions can penetrate the fibre structure and bind persistently to protein chains.
The accumulation of minerals in the cortex may increase roughness, reduce shine and impair the feeling of softness after washing. The hair loses elasticity, becomes brittle and more prone to breakage. In addition, ions deposited on the outer cuticle can form a microcrystalline residue, leading to lasting dullness and roughness of the hair strands.
Solubilisation without heavy residue: cleansing base stability in electrolyte-rich environments
Traditional anionic surfactants, such as SLES and SLS, can form insoluble calcium deposits, known as soap scum, when exposed to hard water. These deposits reduce foam performance and coat the hair fibre. The solution is to use cleansing bases with high electrolyte tolerance.
Sarcosinates, such as Sodium Lauroyl Sarcosinate (LAUCOSOL L), show unique resistance to calcium and magnesium ions. Even at high mineral concentrations, when used in a properly designed surfactant system, LAUCOSOL L maintains its solubilising power and generates dense foam without deposit formation.
Performance in hard water conditions can be supported by multi-level synergy. Guar gum derivatives help stabilise the structure of the cleansing base and control viscosity in electrolyte-rich environments, preventing product separation. Acidic plant-based chelating agents can bind metal ions present in water, reducing their impact.
Rheological architecture of hair care emulsions: how to build a stable lamellar structure?
Designing masks and conditioners requires precise control of rheological behaviour at the interface between the water and oil phases. Long-term physicochemical stability during storage is achieved by managing the emulsion architecture at a microscopic level, through the creation of an ordered lamellar structure that reduces the risk of oil droplet coalescence.
Multi-parameter rheology of the blend and stability across a wide temperature range
Conventional micellar emulsions are systems that are sensitive to changes in temperature, phase ratios and the compatibility of the raw materials used. Ensuring the homogeneity of masks and conditioners with a high lipid phase content requires the formation of lamellar, liquid-crystalline structures.
A fatty alcohol with a balanced ratio of cetyl and stearyl fractions plays a key role here. In combination with cationic surfactants, it forms a three-dimensional lamellar network in the aqueous phase. This crystalline matrix increases the structural viscosity of the system at rest and limits the movement of droplets in the dispersed phase.
As a result, the system becomes more resistant to temperature fluctuations, performs better in stability and thermal shock tests at 40°C or 45°C, and reduces the risk of syneresis and product separation.
Lightweight creaminess and solubilisation of challenging fragrance phases
Rich, lightweight textures can be achieved without synthetic waxes by using self-emulsifying wax bases such as NEOWAX SE PF (Glyceryl Stearate, Ceteareth-20, Ceteareth-12, Cetearyl Alcohol, Cetyl Palmitate).
This raw material makes it possible to build a rich texture with shear-thinning, or pseudoplastic, properties. In the packaging, the cosmetic maintains high viscosity, which then decreases smoothly under shear during application. This supports even distribution and easier rinsing of the product.
The incorporation of fragrance compositions with different polarity profiles often reduces emulsion viscosity or causes turbidity. For this reason, it is important to select components that support solubilisation and phase compatibility in such systems.
Ethylhexyl Stearate (NEOMIN OS) is a lightweight plant-based ester that helps reduce interfacial tension. It facilitates the uniform incorporation of the fragrance composition into the oil phase and improves the slip of the formulation.
Decyl Glucoside (NEOPAL APG 100) and Lauryl Glucoside (NEOPAL APG 200) are non-ionic alkyl polyglucosides that act as co-solubilisers. They help incorporate challenging fragrance phases into the lamellar structure without disrupting the viscosity or stability of the rheological architecture.
A secure supply chain in the cosmetics industry: how to translate an R&D concept into repeatable industrial scale?
In hair care projects, formulation performance is first assessed in the laboratory: in terms of system stability, sensorial profile, ingredient compatibility and the claimed effect on the hair. In practical implementation, however, it is equally important to determine whether the selected raw materials make it possible to move safely through the next stages: documentation preparation, production trials, supplier validation, purchasing planning and batch-to-batch consistency.
For this reason, the decision to select a raw material should not be based solely on its function within the formulation. The availability of technical and quality documentation, supply predictability, compliance with the cosmetic manufacturer’s requirements, access to samples for testing and parameter stability between batches are also important.
In this area, the role of the distributor is not limited to supplying the raw material. It also involves reducing the risks that arise between the R&D stage and serial production. For technologists, this means faster access to the information needed to assess formulation compatibility and safety. For QA teams, it means complete documentation and the ability to verify the raw material before implementation. For purchasing departments, it provides greater predictability in terms of availability, logistical minimums and costs.
Medicos supports cosmetics manufacturers precisely at this intersection: between formulation concept, quality requirements and the realities of the supply chain. As a result, the selection of raw materials for hair care products can be treated not only as a formulation decision, but as part of the entire implementation process, from the first laboratory trials to repeatable production.
Medicos wspiera producentów kosmetyków właśnie na tym styku: między koncepcją formulacyjną, wymaganiami jakościowymi i realiami łańcucha dostaw. Dzięki temu dobór surowców do produktów hair care może być traktowany nie tylko jako decyzja recepturowa, ale jako element całego procesu wdrożeniowego: od pierwszych prób laboratoryjnych po powtarzalną produkcję.
