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Is there a difference between Logics Matrix color creme 4v and solar permanent 4v?  I have been using logics 4v for years combined with 4n aand lately it is only lasting 2 weeks. Any suggestions?  I am now using the Solar developer.

 All colour lines vary somewhat in their colours. Unfortunately I don't have colour charts for comparison of these colours, so this is something you would want to ask the hotline for either of the two companies. When you say it is only lasting two weeks, if you mean that you are seeing new growth at the temples and such, no colour will change this. This is new growth. If you mean that the colour is fading off the strand itself, then you want to make sure that the hair has no coatings or build up on it, like polymers or silicones found in many styling products. You may want to use a clarifying or chelating shampoo a day or two before your colour if this is the case, to remove any build up.
Best of luck to you.
Stephe (hairman)


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I have been a Licensed cosmetologist in New York state for over 26 years, and am well versed in many areas of the cosmetology and appearance enhancement profession.Specialties however, are hair colour, corrective colour and permanent waving,including the chemical and technical aspects of these services and their effects on the hair.I`m glad to consult on any problems you are having concerning your hair.If I don`t have the answer, I`ll try to get it for you.


I've been licensed for cosmetology in New York State since 1974.I am a salon owner, and very active with the National Cosmetology Association and New York State Cosmetology Associaiton.I am one of only a few hundred people in the United States to be certi

For the field of cosmetology, to become acredited as a state educator for the New York State Education Committee or HairAmerica, you must submit to a full day exam, encompassing written exam, practical segments, lesson plans and presentations to prove our knowledge and teaching skills.The same applies for HAirAmerica.I also becam board certified as a coulourist in the same way, by submitting to a full day exam process.I am also antionally certified for cosmetology by the National Cosmetology Ass

I have received several educational awards from New York State for my educational work on a state and national level.
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