Are hair conditioners a physical or a chemical change?
816834
Hair conditioners (assuming you mean applying them, rinse, etc.) is a physical change. The do nothing but put clean oils (grease) back on your hair after you washed the natural oils off with shampoo.
142793
I have colored my hair for years and tried numerous conditioners.  My hair was dry, brittle and didn't have any bounce.\nBy accident, I went into a Taget store and found a product by Umberto of Beverly Hills.\nO.M.G.!!!!!! At age 53, I have the hair texture of a 20 year old.  \nI use the Shampoo, conditioner and Volumizer.  My hair shines, bounces and I couldn't be happier.\nI don't work for or any any connections to this company.  I am just a housewife with happy, healthy hair now. \nHope this helps you!
984082
If you used hair bond to glue them in, the glue softens some when it gets wet.  If it stays too wet for too long, the weave loosens and falls out.  There is a hair bond that doesn't soften when wet.  Ask at your local beauty supply store.
231030
The surface of a strand of hair is covered with overlapping sheets, somewhat like the scales on a fish, or the shingles on a house. This surface is called the cuticle.\n\nAlkaline solutions raise these scales, so they stand up. This makes the hair rougher, makes it look dull, and makes the hair shafts stick together due to the rough texture.\n\nMost shampoos are made slightly acidic, to keep the cuticle smooth and lying flat on the hair shaft. Ingredients like citric acid are added to acidify the shampoo.\n\nAs the shampoo mixes with the water in the shower or bath, or mixes with dirt on the hair, it can become less acidic as the acids mix with alkaline water or dirt. A compound that releases more acidifying ions when the acidity gets low, or absorbs acid when the acidity gets too high, is called a buffer.\n\nA typical buffering agent used in shampoo is sodium citrate. Since the goal is to keep the shampoo slightly acid, the term "pH balanced" is actually a misnomer. We want the balance to be tipped slightly to the acidic side.
904005
hair is made up of proteins. and the monomer of a protein is an amino acid, in that it has an amino complex on it that can accept a proton of hydrogen, it also has a carboxyl end that can donate a hydrogen proton... in the case of bleach, you end up with the carboxyl end donating a proton and it binds with the Cl to form HCl aqueous, causing a change in pH. Now dont be quoting that to your teachers.... that is only my understanding of how it could be a acid/base rxn.
1040379
Conditioners work by neutralizing the hair's pH and smoothing the cuticle down.  What a lot of people don't know though, is that sometimes conditioner can have the opposite effect... especially protien conditioners.  When you continually use protien conditioners on your hair.. the protien just keeps building up and building up, and eventually your hair can't take it anymore and it will start to break off.  So it is important when using a heavy conditioner to make sure that you shampoo it out with a CLEANSING shampoo.  That way you remove the build up... I am familiar w/ Paul Mitchell products.. The Detangler is a great conditioner that won't build up, and it's safe for color treated hair :)
605369
I'm not a scientist, but from the research I've done online I found that since substances stay in your hair shaft for long periods of time, depending on the length of your hair.\nI've also read that they can find substances you might have been exposed to up to 10 years ago!\n\nI've noticed some companies list they do drug testing on hair, which is just rude, since what you did years ago has no bearing on what you do now.
774081
That will do it. Also, hair contains di-sulphide bridges (S-S bonds). Breaking these will make the hair straighter. The compounds that break disulphide linkages are foul smelling (mercaptains, etc) so aren't as popular .
211484
n chemistry, a physical change is when a substance undergoes some form of change that does not change the substance at the molecular level (i.e. a chemical change). Physical changes do not create new substances, as in a chemical change, but result in the same substance in a different form or shape. A physical change in which a substance changes states between solid, liquid and gas is called a phase change. When water is frozen into ice it undergoes a phase change, and thus a physical change, as it is still water but in a different form. Under normal conditions physical changes can generally be considered reversible, however this does not always hold true. Other characteristics of physical changes include the absence of a newly created substance or the change is reversible.\n\nA chemical change is a process in which reactants are changed into one or more different products. A chemical change occurs whenever new compounds are formed or existing compounds decomposed. During this reaction, chemical bonds between atoms are broken and new chemical bonds formed. This results in a rearrangement of the chemical bonds.\n\nThere are several different types of chemical change. These include synthesis, decomposition, single displacement, double displacement, neutralization, precipitation and redox.\n\nIndicators of a chemical change include a colour change, the formation of a precipitate, the formation of gas, production of heat or light, the appearance of a new substance, a use-up of a starting substance, or exposure to the tertiary chooper enzyme or a change in temperature or energy. When new substances are formed, a chemical change has occurred, and a chemical reaction has taken place.
551973
TO CAUSE THE CHANGE CHEMICAL REACTION
29998
The differences are that chemical change is when it chemically changes the elements, such as H2O. Physical change is a change where you can physically change substances, such as when you mix salt with water with a spoon. The similarities are that they both combine 2 substances together to create a new compound, I think.       *No guarentee this is correct*
149821
My Gggggggorgeous bald boyfriend uses mild shampoo and conditioner. His head is so soft and sweet smelling. He said shampoo is a MUST to clean the scalp and conditioner to soften skin. Shampoo alone dries the skin.  .
620539
a chemical change changes the structure of a substance and a physical change doesn't.\n  chemical change:\n  when the gas leaves the water H2CO3= H2O + CO2\n  melting of a metal\n  physical changes:\n  boiling water\n  cutting a piece of metal in half
283344
This may not relate much, but still...\n--There is this 'hydrangea shrub' found in most gardens. When it grows in alkaline soil (basic), it produces pink or white flowers. However, if the soil is treated with a mild acid, the hydrangea produces blue flowers!\n--An acidity of around 3-4 pH in water can make pickles out of all the vegetation present in the water.\n--Some organic acids are so weak that in a 1 moldm3 concentrated solution, only 4 out of every 1000 molecules ionize to produce H+ ions; the other 996 remain unchanged in the solution.\n--When you shampoo your hair, it often gets all tangled; this is because soap contains a mild base (alkali) which causes the small scales on each hair to stand out. Hair conditioners contain a mild acid which when added, neutralizes the base and closes up the scales, making your hair shiny and manageable.
565045
Moisture is the vehicle of most chemical reactions.  Too much humidity can cause the drug to begin to react before it's even packaged, at which point it would be useless or potentially harmful to the consumer.
469294
Hair is an interesting biological structure. What we usually think of as 'hair' is really just the part we see... that's the hair shaft, which contains pigment (a chemical that gives color to things). There is also a hair follicle, which is a multi-cellular structure inside the skin of our scalp that creates the hair strand (making it grow), and also is responsible for the pigmentation. Some of the cells in the follicle make the chemical melanin, which is a skin and hair pigment in many species on our planet. \n\nHair turns grey when the pigment cells in the hair follicle stop making melanin. When this happens due to aging, it's mostly under the control of the genes we inherit. Long periods of constant stress may also contribute, but a big shock won't turn hair grey overnight.
499302
melting physical\nrusting chemical\nburning chemical