Xin chào mọi người! Mình đang làm đề tài: Nghiên cứu điều chế dầu gội khô - tức là dầu gọi không cần dùng nước để làm sạch (tên tiếng Anh “No rinse shampoo”). Các bạn có thông tin gì về loại dầu gội này, cũng như cách điều chế thì vui lòng chỉ cho mình với. Các bạn có thể liên lạc với mình qua địa chỉ mail: huutinh1988@gmail.com. Cám ơn mọi người trước nha!
Hi huutinh1988,
No-rinse shampoo can refer to a shampoo with that brand name or a variety of shampoos that do not require wetting the hair first and rinsing afterwards. Convention shampoos are made, primarily, of water, cleansing agents such as sodium dodecyl sulfate, thickeners, foam boosters, and fragrance. While these shampoos provide perfectly acceptable hair cleansing in most circumstances, they require a great deal of water to rinse the shampoo out of the hair. In most circumstances this is acceptable but rinsing is a serious problem for the infirm, e.g., geriatric patients and those otherwise hospitalized. The benefit of no-rinse shampoos that don’t require rinsing is that you can clean your hair virtually anywhere, and very quickly. While appearance is still an important factor to these people, they are often bedridden so they cannot easily use conventional means of washing their hair. No-rinse shampoos are used by rubbing into the hair, thereby entrapping or chelating the dirt particles and oils, and are removed by toweling and/or combing or brushing the hair. The term “no-rinse shampoo,” as used herein, means a shampoo which requires little or no additional liquid for its operation. The convenience of no-rinse shampoo formulas is certainly undisputed. A bottle of the brand No Rinse costs about 5 USD, or even less, and it can be taken on camping trips, used after a bike ride to work, help cut down on showers in a camper, or applied to the heads of fractious children who hate baths. The products are helpful if you don’t have time to get a shower, and just want to freshen up the hair. Would it work all the time without occasional showers? Actually, it doesn’t appear to work very well over a long period of time. Even though initial washings with no-rinse shampoo formulas do make the hair feel clean, some build-up does occur on the hair, and after a time these shampoos are less effective without regular washings. In hospitals, nurses will usually vary use of no-rinse shampoo with standard hair washing, when patients are stable.
One interesting spin off in the no-rinse shampoo market is no rinse products for pets. This truly may be helpful, especially if you have cats that routinely dislike baths. You can find a variety of no-rinse shampoos for cats and dogs, and some that come in dry powder instead of liquid formulas. Just be sure that these products are certified as non-toxic since animals routinely lick their coats and shouldn’t be ingesting any residue that might be deemed dangerous.
An example “rinse-free” shampoo formula is given using primarily carboxymethylcellulose, sodium ammonium lauryl sulfosuccinate, and sodium lauric betaine, and water. This shampoo is stable and only a small amount, e.g., a teaspoon is needed to be added to the hair for cleansing purposes.
The shampoo is made as a two-part formulation to obtain the best product.
Part A:
Aqualon 7HF (high DS carboxymethylcellulose) 1.5 Aluminum acetate stabilized with boric acid 0.035 Deionized water 95.36 Methyl paraben 0.2 Propyl paraben 0.03 d-Panthanol 0.3 Cetyl alcohol 0.3 Stearyl alcohol 0.5
Part B
Monamate LNT 40-MONA (40% solution of ammonium lauryl sulfosuccinate) 0.7 Monamid 1089-MONA (lauramide diethanolamine ) 0.125 Monateric 985A-MONA (sodium lauryl betaine ) 0.375 Propylene glycol 0.5 Fragrance 0.075
Procedure
1.5% Aqualon 7HF was blended with 0.035% aluminum acetate stabilized with boric acid in a dry vessel.Deionized water (95.36%) is added to a jacketed stainless steel kettle equipped with a blade mixer and is heated to 70-80° C. while stirring, e.g., by passing steam through the jacket. Two preservatives, methyl paraben (0.2%) and propyl paraben (0.03%), are added to the water. Conditioners such as d-panthanol, ceytl alcohol, and stearyl alcohol may also be added at 0.3-0.5% of the total weight. The solution is stirred until the preservatives are completely dissolved. The resulting solution is then transferred to another stainless steel vessel fitted with an homogeneous mixer and is allowed to cool until approximately 60° C. The CMC/cross-linker powder is then added at high speed mixing to insure there is no lump formation and mixed until homogeneous. This resulting material is allowed to stand, e.g., overnight, to minimize the air bubbles in the final product. The CMC is cross-linked by the aluminum acetate/borate and swells with the aqueous solution.
The part B of the shampoo uses a mixture of cleansers, foam boosters, thickeners, conditioners, and fragrance to yield the cleaning action and a more “shampoo-like” texture. Approximately 0.7% Monamate LNT 40-MONA, approximately 0.125% lauramide diethanolamine (Monamid 1089-MONA), 0.375% sodium lauryl betaine (Monateric 985A-MONA), 0.5% propylene glycol, and 0.075% fragrance are blended together. The Monamate LNT 40 and Monateric 985A are soaps, e.g., amphoteric surfactants, while the Monamid 1089 is a foam booster which also may act as a conditioner. The propylene glycol is used primarily as a thickener so as to give a more conventional shampoo-like consistency. Once these ingredients of part B are all blended, they are added part A at slow speed and mixed slowly to ensure that there is no air entrapment. For use the shampoo is a no-rinse mode, approximately a teaspoon of the shampoo is put in the hair and rubbed in vigorously. After being allowed to set for several minutes, the shampoo is removed by toweling and/or brushing or combing, leaving clean, manageable hair. The shampoo also could be used as a conventional shampoo.
You can do on the basic formula first and develop for the specific features later.
Good luck.
Teppi