Formulation & evalution of hair dye.pptx

topic :-
what is hair dye?
types of hair dye
formulation ingredients of hair dye.
method of preparation of hair dye.

Hair dye uses and health implications

in this it is described that what is hair tonic and hair conditioner.
types and formulation of each
evalution of hair dye.

1. Formulation & Evaluation of Hair dye Prepared & Presented by :- Avinash B orad (202630290013) Pinal Detroja (202630290008) Sem-6 B. Pharm. Student G uided by: Ms. K ajal Pradhan Assistant Professor Smt R. D. Gardi B. P harmacy College, Rajkot

2. What is hair dye ? The dyeing of hair is an ancient art that involves treatment of the hair with various chemical compounds. In ancient times, the dyes were obtained from plants . ancient Egyptians were some of the first known people to use hair dye applying henna to cover gray hair.  An ideal hair dye should color the hair without imparing its natural texture and gloss.. 2

3. Marketed product of hair dye One of the oldest known pigments, henna is  a red-orange dye derived from the plant  Lawsonia inermis , also known as the henna tree . The leaves are dried and then crushed to form a fine, dark-green powder. Usually mixed with varying liquids, the paste leaves a rich copper color upon application on the hair or skin No ammonia hair color like Godrej Expert Rich Crème is the best hair color in India . In fact, a color enriched with natural ingredients should always be preferred as it strengthens the hair. Godrej Expert Rich Crème hair cooler has goodness of 10x aloe vera which makes the hair soft and shiny.   This Henna Paste  may give nice, rich, dark natural color to already brown/black hair , but it does nothing for your greys and if you still want . 3

4. Type of hair dye Hair dye are divided in three type Hair dye Temporary Semi permanent Permanent 4

5. 1.Temporary hair dye This dye are containing of the surface of hair and their removing using there one or more time wash with using of shampooing. There are hair color are high molecular weight . The temporary hair dye are acid dye these are low affinity and they are removing by shampooing Avalable form of hair dye in market :- ( 1)Shampoo ( 2)Gel (3) Spray 5

6. 2.Semi permanent hair color There dye are permanent into the hair shaft but not a deeply as permeant dye. They should be smaller molecular weight then temporary hair dye. There are semi permeant dye are do not wash out eassly but they the washout the hair after about 5 – 10 time shampoo session. There color are use in this case are direct dye of low molecular weight & have a good affinity to hair certain. Available form of hair dye in market :- (1)Lotion containing surfactant (2)shampoo 6

7. 3.PERMENANT HAIR COLOR it permanently changes the color of your hair. hen mixed with a developer, permanent hair dye opens the cuticles that comprise the surface of the hair shaft and delivers dye deep inside. The cuticle then reseals, preventing the color from escaping. Permanent hair color will not fade away gradually so you will always see a difference between the new growth and the colored hair. Permanent color is used to lighten or darken hair; change the color of hair and cover grey.  Permanent hair color lasts indefinitely because it permanently alters the color structure of the hair. 7

8. Formulations ingredient of hair dye 8

9. 2. Alkalizing agents :  The alkalizing agents are added. To increase the pH of the formulation to an optimal level. Examples of alkalizing agents include ammonia, Monoethanolamide. 4 . Oxidizing agents :   Oxidants are used to bleach melanin present in the hair. Light color shades are obtained when the grey and pigmented hair are colored evenly by using semi permanent colorants 9 1. Formulation bases :  They are used as vehicles for dyes (amino dyes) and modifiers. The vehicle is one that uniformly distributes the colorant mixture on the hair. Example: In amino dyes, a mixture of water (48-7945%), ethyl alcohol (20-50%) glycerin (0.5 – 2%) is used because the amino dye has low aqueous solubility. 3.Dye :  Dyes are used to imparting the desired colour shade to the hair.

10. 10 7 . Surfactant :  It reduces the surface tension between the different ingredients, to make a homogeneous preparation . 6. Solvents :  The constituents of the colorants which are not soluble in water, are dissolved by using solvents so that a homogenous system is obtained. . 5 . Antioxidant :  During the manufacturing of dyes, especially amino dyes, an atmosphere of nitrogen is maintained to prevent the darkening of the dye. Since dyes (amino dye) are darkened on exposure to air. Instead of maintaining nitrogen atmosphere, chemical antioxidant like sodium sulfite is included in the preparation.

11. Method of Preparation example : 11

12. Method of preparation hair dye. 12

13. Evaluation of Hair Colourant The following tests are carried out to evaluate hair colorants: 1. The Sensitization Test:  The test is carried out on animal skin. The colorants are applied to the skin and are kept under observation for 24 hrs. If no reaction occurs, then the colorant is said to be non-sensitizing or non-irritant. The histopathological study is carried out as per requirements. 2 . The Toxic Effect Test:   Toxic effects are studied in animals to know about the long term effects of the preparations 13

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