Skin type determination device

A skin type determination device comprising:

• An oil sensor for measuring the oil content of the test subject's skin;
• A moisture sensor for measuring the moisture content of the test subject's skin;
• A memory for storing oil data measured by the oil sensor and moisture data measured by the moisture sensor;
• and
• One or more processors, wherein the one or more processors:
• Normalize the oil data to determine an oil index;
• Normalize the moisture data to determine a moisture index;
• Calculate the product of the oil index and the moisture index to determine the test subject's skin type.

A skin type determination device comprising:

• A sebum sensor for measuring the sebum of the test subject's skin;
• A moisture sensor for measuring the moisture of the test subject's skin;
• A color tone sensor for measuring the color tone of the test subject's skin;
• An elasticity sensor for measuring the elasticity of the test subject's skin;
• One or more processors;
• A memory;
• and
• One or more programs stored in the memory and configured to be executed by the one or more processors, wherein the one or more programs include the following instructions:
• Change the sebum data measured by the sebum sensor to a value within a predetermined range to determine a sebum index;
• Change the moisture data measured by the moisture sensor to a value within a predetermined range to determine a moisture index;
• Change the color tone data measured by the color tone sensor to a value within a predetermined range to determine a color tone index;
• Change the elasticity data measured by the elasticity sensor to a value within a predetermined range to determine an elasticity index;
• Perform a multiplication operation on the color tone index and the elasticity index to determine the skin type of the test subject;
• and
• Perform a multiplication operation on the sebum index and the moisture index to determine the skin type of the test subject.