Category: L

  • Long sight

    Condition in which a person can see distant things clearly, but close things appear blurred.  

  • Lowlights

    Lowlights

    The same as highlights, but providing darker rather than lighter tones.  

  • Level system

    A system used by hair colorists to value the natural level of lightness or darkness in your hair color. It ranges from black to lightest blond and helps the colorist establish what hair colors are most suitable for you. System that colorists use to determine the lightness or darkness of a hair color.  

  • Leave-in conditioner

    Lightweight and daily conditioners, and indeed conditioners labeled “leave-in” or something similar, can be left in the hair rather than rinsed out. They add extra moisture, shine, and smoothness, and also make hair more manageable.  

  • Large round brush

    A styling tool used to add lots of volume, or to create big loose waves.  

  • Leiner’s disease

    A widespread form of seborrheic dermatitis in infants.  

  • Load test

    A test to determine the state of vitamin deficiency of a person by administering a specified dose and noting the excretion pattern; in a deficiency state, a lesser proportion will be excreted.  

  • Leader

    The main central growing shoot of a sapling, which eventually thickens to form the trunk of the adult tree. A double leader results when the leader forks at a narrow angle, regarded as undesirable because it weakens the tree.  

  • Lysol

    A strong disinfectant, made of cresol and soap. Coal-tar derived phenolic disinfectant, saponified cresol, used at 2 per cent strength. The corrosive and odiferous nature of lysol has resulted in its replacement by the refined phenolics. A brown, clear, oily fluid with antiseptic properties, made from coal-tar and containing 50 percent cresol. When mixed with…

  • Lyophilisation

    The act of preserving tissue, plasma or serum by freeze-drying it in a vacuum. A technique used in the preservation of plant tissues, microorganisms, etc., whereby water is removed under vacuum while the tissue remains in the frozen state.