FAQ

Microencapsulation questions.

What formulators ask us most about our microfluidic fragrance microcapsules.

What is fragrance microencapsulation?+

Microencapsulation wraps oil-based fragrance ingredients inside micron-sized spheres with a protective shell. The shell holds the scent in your product and releases it later, for example when the fabric is rubbed or warmed.

How does OTTOCAPS® make its microcapsules?+

We use microfluidic chips. They make each capsule one by one inside a precision-engineered chip, so every capsule is nearly the same size. Most capsules on the market are made by bulk emulsion, which is fast but gives uneven sizes.

Why does a uniform capsule size matter?+

Capsules of nearly the same size release fragrance evenly, without weak or overpowering bursts. They also spread more evenly through fabrics and home-care products.

What triggers the fragrance release?+

Friction or heat. Micron-sized capsules have a large surface area, so they release scent quickly and efficiently once triggered.

Are the capsules stable in fabric softeners?+

Yes. OTTOCAPS® Ruby is engineered for cationic softener bases. It survives wash and dry cycles and releases scent on friction. Each batch is tested for thermal and phase-separation stability.

Are OTTOCAPS® microcapsules biodegradable?+

Yes. The shell breaks down into harmless substances such as CO₂, water and biomass in soil or water. This prevents microplastics from building up after washing and wastewater release.

How does the ECHA microplastics restriction affect my products?+

ECHA's restriction on microplastics gives different sectors different transition periods: rinse-off cosmetics until 2027, detergents and fertilisers until 2028, plant protection products until 2031, and make-up and nail products until 2035. From 2031 these products must also carry the label “This product contains microplastics”. Biodegradable capsules help you prepare for this.

How are the capsules characterised?+

Each batch is checked with optical and electron microscopy (SEM), size distribution analysis and thermogravimetric analysis.

Can I get a sample?+

Yes. We send a free 100 mL sample of OTTOCAPS® for your bench tests, with recommended dosing for your application.

Have another question? Contact our team.