39. Make a working recipe for preparing nail polish. Describe the main technological operations. Define parameters for assessingquality. Nail polish (manicure varnish) is a product for manicure and pedicure, intended for coloring nails and giving them shine; it is a suspension of pigments based on primary and secondary film-forming substances, a plasticizer, solvents and other auxiliary substances. Nail polish preparation technology
The preparation of nail polish consists of the following technologies: logical stages:
- dissolution of primary and secondary film formers in organic solvents; - introduction of a plasticizer; - homogenization of the mixture (30-60 min) and maturation (48 hours); - filtration of the base - preparation of a solution of dyes in ethyl alcohol (with constant stirringfor 2-3 hours);
- introduction of dye solution, pigments into the base and homogenization(6 hours); - varnish maturation for 3 days; - Packing, capping and labeling of the finished product.
Nail polish must meet the requirements of technical specifications andbe manufactured according to technological documentation approved in the prescribed manner. Nail polish quality indicators. According to organoleptic and
physico-chemical indicators, nail polish must meet the requirements and norms.
The guaranteed shelf life of nail polish is 12 months from the date of manufacture.
40. Draw up a process flow scheme for the production of nail polishremover. Define parameters for quality assessment.
Preparation of nail polish consists of the following technologicalstages:
• dissolution of UV the primary and secondary film-forming agent in organicsolvents;
• introduction of plasticizer;
• homogenization of the mixture (30-60 min) and maturation (48 hours);
• filtering the basics;
• preparation of a dye solution in ethyl alcohol (with constant stirring for 2-3 hours):
• introduction of
a dye solution, pigments and homogenization into the base (6 hours);
• maturation of the varnish within 3 days:
• packing, capping and labeling of the finished product.
Quality control of nail polish
Nail polish must meet the requirements of technical specifications and be manufactured according to the technological documentation approved in accordance with the established procedure.
According to organoleptic and physico-chemical indicators, nail polishmust meet the requirements and norms.
