The correct use concentration depends upon several factors including the chemical and physical nature of the product, its ability to support microbial growth and the likelihood of recontamination during use. Experience has shown that Phenonip ® will preserve cosmetics and toiletries when incorporated at concentrations from 0.25% to 1.0%.
The higher concentrations are generally required only for formulations which, by their nature, are particularly difficult to preserve.
Shampoos and foam baths may be preserved with Phenonip ® at concentrations typically between 0.25 - 0.65%.
Products with a high protein content may require levels from 0.5% - 1.0%.
Other surfactant-based products, for example liquid dishwashing detergents, are generally preserved with Phenonip ® over the range 0.2% - 0.6%.
Safe for lip products at .5%.
Emulsified systems, both o/w and w/o types, may be effectively preserved by the addition of Phenonip ® at 0.4 - 0.7%.
Phenonip ® can also be used to preserve emulsions based on nonionic surfactants, but slightly increased concentrations may be required, eg. 0.5 - 1.0%.
Use Phenonip ® at 1% in the presence of 5% polysorbate 80.
TIPS: Performs best when formulation pH is 3.0-8.0. Inactivated by Polysorbate 20, Polysorbate 80, and ceteareth-20. The recommended usage rates are provided only as a guideline to provide proper preservation. All new formulations should be tested to ensure preservative efficacy. Protect clothing and work area when mixing.
STORAGE: Store in an airtight, cool, dark location. When stored properly, best used within 1 year from date of purchase.
CAUTION: For external use only. Keep out of reach of children and pets.