How do big brands add fragrance to shampoos and shower gels?

A. Do they add the fragrance last thing, by mixing it so surfactants in the shampoo emulsify it?
This would cause lots of bubbles.

B. Do they premix fragrance with concentrated surfactants, then make the shampoo as usual?
This can cause some fragrance to evaporate by the time the shampoo is finished.

C. Premix the fragrance with some solubilizers/emulsifiers.
This looks like the best option, but I don't see solubilizers in the List Of Ingredients.

D. Some other?
Please specify.

Comments

  • don't have firsthand experience but  what if they just reserved some small amount of the surfactant for the end to add with the fragrance?
  • I use method B. 
    Cosmetic Brand Creation. Concept to name to IMPI search to logo and brand registration. In-house graphic design inc. Pantone specs. Cosmetic label and box design & graphics.
  • ozgirlozgirl Member, PCF student
    We generally use method B also. We don't notice any loss of fragrance.
  • Generally it's mixed with a solubilizer then dumped in before salt addition (if needed) or it's added at the end at room temperature.  What specifically is the LOI? 
  • Chemist77Chemist77 Member, PCF student
    Method B and generally the surfactants' concentration solubilizes the fragrance completely. Exceptions are always there though. 
  • If it’s cold process I start making shampoo from premixing fragrance in olefin sulfonate. I noticed it’s much better in solubilising EOs than any other surfactant I work with. Better than SLES. Depending on type of EO, product might even stay clear.
  • PerryPerry Administrator, Professional Chemist
    It depends on the fragrance. Some go in fine if you just add them on the cool down phase. Others require something like Polysorbate to get them to go in. 
  • I noticed that polysorbates can lead to a decrease of viscosity when added to shampoo. The caveat is that I only observed that in sulfate-free shampoos.
  • FekherFekher Member, Professional Chemist
    @Gunther actually i use  A method it is too easy and i have never face problem with it .
  • Bill_TogeBill_Toge Member, Professional Chemist
    edited February 16
    I noticed that polysorbates can lead to a decrease of viscosity when added to shampoo. The caveat is that I only observed that in sulfate-free shampoos.
    this is true in structured surfactant systems generally; highly soluble non-ionic surfactants like polysorbate 20 compete with the structured surfactant system for the available water, and cause the latter to thin
    a manufacturer I used to work for used to use PS20 to thin surfactant-based products, until they realised hexylene glycol was more flexible (easier to re-thicken the product if they overshot the bottom of the spec) and was cheaper
    UK based formulation chemist. Strongest subjects: hair styling, hair bleaches, hair dyes (oxidative and non-oxidative) I know some stuff about: EU regulations, emulsions (O/W and W/O), toothpaste, mouthwash, shampoos, other toiletries
Sign In or Register to comment.