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Which type of relaxer requires the application of a protective base cream to the entire scalp prior to the application of the relaxer?

  1. No-base relaxer

  2. Base relaxer

  3. Thermal relaxer

  4. Lye relaxer

The correct answer is: No-base relaxer

A no-base relaxer is the correct answer because it is the type of relaxer that does not require the application of a protective base cream to the entire scalp before the relaxer is applied. This type of relaxer is formulated to be applied directly to the hair without the need for additional protection on the scalp. Base relaxers, thermal relaxers, and lye relaxers all require the application of a protective base cream to the entire scalp to prevent irritation or burns during the chemical process. Therefore, they are not the correct answer to the question posed.