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ACS Researchers Find Way to Provide Long-lasting Scent in Shampoos

Published on 2017-08-02. Author : SpecialChem

ACS Applied Materials & Interfaces researchers have found a new way to help the fragrance stick” to hair longer. This helps the consumers to select their shampoo based on smell, which can last pretty longer.

ACS Researchers Find Way to Provide Long-lasting  Scent in Shampoos
ACS Researchers Find Way to Provide Long-lasting
Scent in Shampoos

Fragrance Ingredients in Shampoo

Fragrances are one of the most expensive shampoo ingredients , but most of these floral- or fruity-smelling compounds evaporate rapidly or are easily washed away when surfactants , such as shampoos, are used. Currently, manufacturers try to keep the smells around longer by incorporating delivery systems.

One such system is “profragrances” in which a polymer is attached to the scent compound and is broken off once shampooing starts, and another is encapsulation of the scent compound with polymers.

Although these approaches have been shown to be effective, they still don’t help fragrances adhere to the hair for long periods. Harm-Anton Klok, Andreas Herrmann and colleagues are now looking at ways to promote the deposition of scents onto hair.

Cyclic Peptide for Hair Care

The group identified a cyclic peptide that could bind to hair under shampooing conditions, which meant a low pH and in the presence of surfactants. Then, the peptide was connected to the two popular delivery systems:

  • A microcapsule 
  • A profragrance model polymer

They found that the peptide efficiently deposits both types of systems to hair.

The researchers say that for the polymer and microcapsule tests, those that were bound to a peptide were loaded about 5 and 20 times more efficiently, respectively, onto hair than those that lacked a peptide. This increased deposition resulted in a stronger fragrance smell on hair for up to 24 hours after shampooing.

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Source: ACS Applied Materials & Interfaces
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