Using Lemon Peel Bioferment in Lanolin Bar Soap

Regarding the use of Lemon Peel Bioferment (Lemon Skin™) in lanolin bar soap for skin whitening, based on the product's properties, it is not suitable for traditional bar soap making.

Lemon Peel Bioferment requires mixing in the final step of a formulation at a temperature below 40°C and within a pH range of 3.5-7. The process of making traditional bar soap involves high temperatures during saponification and results in a high pH environment, which would likely degrade the active components of Lemon Peel Bioferment, rendering it ineffective.

Many natural extracts and fermented ingredients with skin brightening properties have similar limitations regarding heat and pH stability, making them challenging to incorporate directly into traditional bar soap.

While direct whitening extracts are difficult to use in bar soap, ingredients that promote gentle exfoliation can help improve skin radiance and evenness over time. An example of a natural enzyme exfoliant is Bio-S Protease™. However, this ingredient also has temperature sensitivity (avoid heat exceeding 40°C), meaning it would need careful consideration for incorporation into soap, possibly added at a much later stage or used in a different type of cleansing product like a liquid cleanser base where the temperature and pH can be controlled.

In summary, incorporating heat-sensitive natural whitening ingredients like Lemon Peel Bioferment into traditional bar soap is generally not feasible due to the manufacturing process. For skin brightening in bar soap, you might need to explore ingredients known to be stable in such conditions or consider alternative product formats.