Study Set Content:
Thus, derivatives of midazoline, betaine, and sulfobetaine are usually combined with nonionic suractants () class to procure sting-free formulations
polyethoxylated alcohol esters
are designed to lessen and alleviate the excessive desquamation of the scalp via inclusion of specific ingredients
MEDICATED DANDRUFF SHAMPOOS
MEDICATED DANDRUFF SHAMPOOS These include antimicrobials, such as quaternary ammonium salts; keratolytic agents, e.g
salicylic acid and sulfur, or antiseborrheic compounds like coal tar and resorcinol.
The efficacy of developed shampoo prototypes is being evaluated in the laboratory using established testing procedures. Thus, foamability and lather characteristics are measured in the presence and absence of (), gaining some insight into the detersive aspects of the formulas
sebum
The properties of shampooed hair, with respect to its luster, combability, body, and fly-away, are instrumentally assessed together with the subjective evaluation of ()
hair appearance.
Shampoo ingredients do not pose a particular hazard about ()() safety. The contact time is short and a water rinse follows.
skin or eye
The irritation potential of some surfactants has already been () to. It is a common practice for most of the manufacturers to make provisions to evaluate their product for skin and eye irritation
alluded
A good conditioner eliminates (), makes the hair easy to comb and style, eliminates static charge, and, by fostering fiber alignment, enhances the luster and shine of hair.
tangling
The soft feel of hair and improved () are additional important attributes of conditioned hair
manageability
Two general forms of conditioners are currently in use:
Hair rinses
Leave in products, (often referred to as ‘‘deep’’ conditioners).
in which the rinse product is rinsed off after a few minutes.
Hair rinses
In which the product is left on the hair for up to 30 minutes, after which it is rinsed off. The purpose of the longer time is to allow the product to penetrate further (thus the name ‘‘deep’’) into the hair shaft thereby extending the conditioning effects.
Leave in products, (often referred to as ‘‘deep’’ conditioners)
The active ingredients in most conditioners are based on () (cationic surfactants) such as steartrimonium chloride and, cetrimonium chloride, and the like.
quaternary ammonium salts
Because of their great affinity for hair, these compounds bind strongly to the cuticles, providing a low-friction surface, thus making the cuticles slick and less prone to
abrasion
Other components present in the conditioning formulations, such as ()()(), supplement the action of cationic surfactants, adding primarily to the tactile benefits.
fatty amines, fatty alcohols, and amine oxides
he leave-in conditioners that are recommended for use on damaged hair frequently contain
protein and lanolin derivatives
are usually lost in shampooing, and are application is recommended to reinforce the protective effect.
Conditioning effects
Conditioning formulation containing () are somewhat longer lasting.
Cationic polymers
The same is true for conditioners based on emulsions of
polymeric silicones
