If you have read my earlier posts, you know about humectants. So, today lets talk about their role in hair care products.
Humectants draws water from the air and hence are used in the products to increase the water retention in your hair and skin. The water retention capability of these substances comes from the hydrogen bond that they make with water molecules which results in minimum water loss due to evaporation. So, because of this water binding capability, humectants are ideal for our dry curls and keep them moisturized.
But, there are times when their effect is not so good depending on the weather condition. How humectants behave depends a lot on humidity in the air. Humidity is the amount of water vapors present in the air. So let’s see the effect of humidity on your hair. First, let’s try to understand how you can figure out how humid the air is. One way of telling the moisture content in the air is the Dew point.
According to Wiki, “Dew point is the temperature at which the water vapor in a sample of air at constant barometric pressure condenses into liquid water at the same rate at which it evaporates”. That means dew point is the temperature at which the number of water vapors molecules being formed is equal to the number of liquid water molecules being formed (Evaporation rate = condensation rate). At temperatures below the dew point, water will leave the air and condenses.
Don’t worry too much about understanding the definition of dew point. You just have to understand this, the higher the dew point, the more moisture in the air. If dew point is lower, there will be less moisture in the air. So, once you step out of the house you can make out from the dew point in your weather report how you hair will behave.
Low Humidity, dry air and low dew point
- Use a well moisturized conditioner that does not rely only on humectants.
- Minimize the use of products that contain higher amount of humectants. That is products having humectants that are mentioned lower down the ingredients list.
- Use gels or styling products that contains styling polymers which gives good curl definition in these extreme weather condition.
Isoceteth-x, Isolaureth-x, Laneth-x, Laureth-x, Steareth-x