Mixing 20 volume creme developer with 30 volume creme developer will result in an in-between strength, usually around 25 volume. This may alter the expected outcome of your hair color or chemical process, so it's best to use the correct developer strength recommended for your specific hair product.
Any brand cream developer can be used with a color as long as it is mixed according to the manufacturer's directions and it is the appropriate volume.
Mixing 30 volume creme developer with bleach will increase the strength of the bleach, making it more powerful at lifting hair color. This combination is typically used for high-lift blonding services and can help achieve lighter shades of hair, but it should be used carefully to avoid damaging the hair. It is important to follow the manufacturer's instructions and perform a patch test before using the mixture on your hair.
It depends on the amount of lift you desire. Once your hair has reached the color you are looking for you can rinse it out or apply water to it using a spray bottle to slow it down or to make it stop working. Once the developer is put on your hair it will only work for so long anyway and stop. This happens if it has reached it's limit as it will only lift your the pigment in your hair twice. I would follow the manufacturers directions located on the box or the bottle, generally that should state how long the mixture should remain on your hair.
Approximately 2 years if the container is tightly sealed and stored in a cool, dry place and away from light.
Read the directions on the bottle. Every brand is different.
The colour will not take, you need the developer to activate the colour. I disagree. I died my hair today with Feria Intense Auburn without any developer, and it is bright red and looks great. I have long hair, so I don't use the developer bottle and replace it with an equal amount of conditioner and leave it in longer. It will fade quicker, but won't damage my hair.
about half a hour:-) dont go over a hour though because it will damage your root and hair x
Their are 2 parts to a hair color system. The toner, or "color" part, and the developer, or "peroxide" part. Developers come in 4 different strengths called VOLUMES. 10 volume being weakest . Solite Matrix Developer is a peroxide developer. There are several other brands of developers. Most companies make their own brand and encourage you to use it with their toner, but you can use different developers, as long as they are the correct volume for the toner. All are peroxide products in a liquid or a creme consistency. 10 volume lifts the cuticle of the hair and allows the deposit of a color products to grip the hair. Most glazes are meant to be mixed with a 10 volume developer, but the container should tell you what volume ( 10, 20 or 30 ) and the amt to use. If the hair color says mix to a 1:1 ratio, it means for each part toner, use and equal amt of the correct volume developer. 20 volume peroxide developers lighten the hair and lift the cuticle to deposit color, 30 volume is strong stuff, can burn your hair and scalp and should not be used at home. READ THE INSTRUCTIONS IN THE TONER BOX.
Blonde hair should not turn orange after bleaching. If it is, it is due to one of two reasons: 1). The bleach was not left on the hair long enough. 2). The developer was not strong enough. Be sure to read the directions in regards to the processing time and try using a 30 volume cream developer.
If you're youngish, long hair will probably suit you. When you get older, shorter hair will look better on you
As long as inside the container is below 2 degrees you should be good. Id say 3 pounds should be good for about 2 hours.