Both of these hair colors are mixed 2:1 or two parts developer to one part hair color. 4) The higher the number (or level) designated to the color, the greater its' lightening ability. 5) When mixing 2 colors at different levels, the higher level color will lighten while the lower level will add depth-helping to avoid brassiness. 6) When mixing 2 hair colors together, a simple mathematical formula to determine your resulting hair color level is: Add your natural hair color level to the level of the hair color you are using. For example: your natural level is a 5 (dark brown). 9 is the level of the hair color you are using. ( Level 5 + level 9) = 14. Then divide the sum total of the 2 levels (14) by 2. 14 divided by 2=7.
retighten (third-person singular simple present retightens, present participle retightening, simple past and past participle retightened) to tighten again.
retain late 14c., from O.Fr. retenir, from L. retinere hold back, from re- back + tenere to hold (see tenet). Meaning keep (another) attached to one's person, keep in service is from mid-15c.; specifically of lawyers from 1540s. The Jew was retained and in a wretched inn her things were unpacked. In spite of the panic the Spaniards had retained hold of their prisoner. Their mode of worship has retained something of the antique gaiety. Unusual spelling and hyphenation in the dialect is retained as printed.