1. Scalp condition
Like skin condition, there are 4 primary categories of scalp condition: normal, dry, oily, and combination. However, scalp condition varies greatly during the course of your life. The many internal and external factors that determine scalp condition include: climate and pollution, medication, stress and genetic factors that influence the levels of sebum and moisturizing factors that your scalp produces as well as the products that you use and the hair/scalp care choices that you make. The Chowis Mobile Analyzer for Hair offers a convenient and efficient way for you to determine a customer's scalp condition. The onboard corneometer uses capacitance sensors to accurately measure the hydration level.

Figure 1. Corneometer capacitance sensor of the Chowis Mobile Analyzer for Hair
Absorbent sebum strips are provided for the diagnosis of scalp sebum.

Figure 2. Scalp sebum strips
Press the sebum strip moderately onto scalp for 10 seconds, remove sebum strip and take an image with the PPL light mode of our analyzer. Repeat the process for two scalp spots. Our algorithms then evaluate both the hydration level and sebum level to provide the grading for scalp condition.
2. Chowis scalp condition grade
The following scale has been co-developed by Chowis and Dermatology experts. For moisture, we average the moisture scores of two scalp regions to get the final hydration level. For scalp sebum, our algorithm detects sebum spots in the captured images and compute the average as the sebum level. Based on the scale shown in Table 1, we grade scalp condition into normal, dry, oily and combination. To get accurate estimation of scalp condition, make sure you measure moisture and sebum for two scalp spots.
Moisture scale | Sebum scale | Scalp condition |
---|---|---|
50 | 50 | Normal scalp |
0 ~ 33 | 0 ~ 33 | Dry scalp |
0 ~ 99 | 66 ~ 99 | Oily scalp |
0 ~ 99 | 34 ~ 66 | Combination scalp |
3. Radar Graph and bar graph
To help you gain insights in your hair and scalp diagnosis, we visualize the results using bar graph and radar graph. In the bar graph, we convey for each hair and scalp attribute how well you perform. The lesser the color that fills your bar, the worse that hair or scalp attribute is.

Figure 3. Bar graph for hair and scalp diagnosis results
In the radar graph, the nearer a dot is located to the center, the better that hair or scalp attribute is.

Figure 4. Radar graph for hair and scalp diagnosis results
Depending on how well you perform for each hair and scalp analysis, we provide advices on care focuses and recommend the right products just for you
Care level | Description |
---|---|
Normal | Maintain current care routine if any. No changes are required |
Need to care | Need to begin to use products that focuses on the specified hair or scalp measure before it gets worse |
Pay attention to care | Extra attention and care is recommended |
Intensive care needed | Intensive care and/or proper treatment is recommended |