The topic is short and compact
Hair dryers reach around 95 degrees Celsius, straighteners up to about 230 degrees; heat protection must be designed to withstand this.
Silicon-free claims have increased significantly, bringing plant-based alkanes and squalane to the fore as alternatives.
An adaptation based on a pre-qualified formulation reaches market readiness in about two to three months.
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Unlike a conditioner that is rinsed out, a serum remains in the hair all day long and withstands mechanical stress and styling. This results in three requirements that limit each other.
First, thermal protection: hair dryers reach about 95 degrees Celsius, straighteners up to around 230 degrees. Second, shielding against humidity, which triggers the swelling of the fiber and thus frizz. Third, light reflection on the surface, which is perceived as shine. All of this must be achieved without a weighing-down film.
Heat protection for the range up to about 230 degrees Celsius.
Moisture shielding against swelling and frizz.
Shine through surface reflection without weighing down the hair.
What a leave-in serum needs to do
Unlike a conditioner that is rinsed out, a serum remains in the hair all day long and withstands mechanical stress and styling. This results in three requirements that limit each other.
First, thermal protection: hair dryers reach about 95 degrees Celsius, straighteners up to around 230 degrees. Second, shielding against humidity, which triggers the swelling of the fiber and thus frizz. Third, light reflection on the surface, which is perceived as shine. All of this must be achieved without a weighing-down film.
Heat protection for the range up to about 230 degrees Celsius.
Moisture shielding against swelling and frizz.
Shine through surface reflection without weighing down the hair.
The carrier system as the first decision
The carrier determines the stability, flow behavior, solubility of the active ingredients and the overall sensory profile. It is therefore the first strategic decision, not a detail at the end.
The main options are anhydrous oil systems, emulsions as a light milk or cream, and alcohol-based spray formats. Anhydrous systems provide the strongest film formation but can quickly feel heavy. Emulsions are lighter and more versatile, but require preservation and proof of stability. Spray formats disperse finely but transport less active ingredient.
Anhydrous oil system: strong film, no preservation required, risk of weighing down.
Emulsion: light sensory profile and wide selection of active ingredients, but requires preservation.
Spray format: fine distribution, lower density of active ingredient.
Formulated for heat protection and frizz control
The protective effect is created by film formers that leave a thin, thermally stable coating on the fiber. Traditionally, this is achieved using silicones, which provide high slip and reliable heat protection.
However, the demand for silicone-free claims has increased significantly. Plant-based alternatives such as squalane and medium-chain alkanes achieve a similar sensory profile and good protection, but behave differently in terms of build-up: they form a lighter film and must be carefully balanced in combination.
Silicones: high heat protection and slip, but a positioning question.
Squalane and alkanes as plant-based alternatives with lighter film build-up.
The decision is made before the formulation development because it determines the architecture.
sensory profile, scent and packaging
Commercial success is determined less by the active ingredient list than by the feeling during application and after drying. The formats range from light milk to liquid oil to rich cream, each with its own viscosity adjustment.
Formulation is based on the ratio of volatile spreading agents to non-volatile conditioning components. Too much non-volatile content feels greasy or stringy. In hair care, fragrance is a key purchasing factor, but it acts as a solvent and plasticizer, which is why skin compatibility with the packaging material must be tested separately.
The ratio of volatile to non-volatile components determines the skin feel.
Dose fragrance early because it affects stability and packaging.
The pump, spray head, or pipette should be included in the sampling phase.
Periods, quantities and cost structure
The fastest way is through a pre-qualified base that has already passed the stability test. Fragrance, active ingredient accents, and packaging are adapted. A realistic timeframe here is about two to three months to market readiness.
A completely new development takes longer because the twelve-week stability test only begins after formulation approval. There is no fixed minimum quantity: it is determined by the packaging material, filling process, and the smallest economically viable batch size.
Pre-qualified base: about two to three months to market readiness.
New development: longer, as the testing phase only starts after approval.
Minimum quantity is determined by packaging material and filling process, not a fixed rule.
The process in five phases
A structured path leads from the concept to the serial product. At the beginning is the technical briefing with hair type, target effect, silicone decision, viscosity target, and packaging. This is followed by the laboratory phase with the first samples.
In the customization phase, active ingredients, viscosity, and fragrance are adjusted. Prototyping includes stability testing, stress testing of the preservation, and packaging compatibility. Only after that does production follow via pilot batch and series. The toxicological evaluation already begins in the laboratory phase.
Technical briefing with binding silicone and packaging decision.
Evaluate samples in the candidate container, not in the laboratory glass.
Testing phase, then pilot batch, then series.
Regulation (EC) No 1223/2009 applies to the EU market. The manufacturer must cooperate in the creation of the product information file, facilitate the safety report, and support the notification via the CPNP portal.
In Germany, the Federal Institute for Risk Assessment evaluates the health risks of cosmetic ingredients. For the selection, this means: A partner should not only be able to bottle, but must understand regulatory documentation as part of the service.
Cooperation on the product information file and safety report.
Experience with leave-on formats and their sensory profile.
In-house laboratory capacity instead of pure bottling capacity.
The selection criteria are covered in Lohnhersteller finden.
Having hair serum manufactured is a well-plannable venture if the strategic decisions (carrier base, heat protection strategy, silicone positioning, sensory profile) are made early and build on a pre-qualified formulation base. Anyone who considers packaging compatibility and regulatory preparation alongside the formulation can achieve market launch in 2 to 4 months.
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FAQ
How is a heat protection serum developed?
Via film-forming agents that leave a thermally stable coating on the fiber, combined with a lightweight carrier system. It is designed for temperatures up to about 230 degrees Celsius, which is what hair straighteners reach. Hairdryers, at around 95 degrees, are well below this.
Can a hair serum be formulated without silicones?
Yes. Plant-based alternatives like squalane and medium-chain alkanes provide good lubricity and protection. They form a lighter film than silicones, which is why the combination must be carefully balanced to achieve a comparable sensory profile.
How long does the development take?
Based on a pre-qualified formulation, it takes about two to three months to reach market readiness. A completely new development takes longer because the twelve-week stability test only starts after the formulation release and is on the critical path.
What is the minimum quantity for hair care?
There is no fixed number. It is determined by the packaging material, the filling process, and the smallest economically viable batch size. Pump bottles, spray heads, and pipettes all behave differently in this regard.
Which carrier system is suitable?
Anhydrous oil systems provide the strongest film, but can quickly feel heavy. Emulsions are lighter and allow for more active ingredients, but require preservation. Spray formats distribute finely, but transport less active ingredient. The choice depends on the target product.
Who evaluates the safety of the ingredients?
For placing on the market, Regulation (EC) No 1223/2009 applies, including a safety report, product information file, and CPNP notification. In Germany, the Federal Institute for Risk Assessment evaluates the health risks of cosmetic ingredients.
