Hydrophilic moisturizing ingredients often used in cleansing cream, but the real effect of Butylene Glycol it dissolve the dirt, avoid drying too quickly during remove stage.
Butylene Glycol is a small molecule moisturizing ingredients, which hold water in the stratum corneum, the effect of hygroscopic is not very clear.
The CIR concluded that Butylene Glycol are safe for use in cosmetics and personal care products.
It is definitely comedogenic. :(
丁二醇—四個碳(C)，兩個(OH)， 所以可以有1,2-丁二醇 / 1,3-丁二醇 / 1,4-丁二醇，三種。
I understand it may be comedogenic to some, but not in all skin types, as everyone's skin chemistry is different & therefore will react differently for everyone! Makes sense, right!
Rates GOOD for most skin types, according to Paula's Choice & is used as a Texture Enhancer
Rates 1:0 https://www.platinumskincare.com/comedogenic-ratings/
I have an acne-prone skin and Butylene Glycol did not clog my pores. Why did I come up with that conclusion? There's this product from Acne.Org called Benzoyl Peroxide 2.5% and of all the products that I have tried to heal my cystic acne, it is the only one that cleared me within 1 month. I checked cosDNA today and discovered that my acne treatment contains Butylene Glycol. SURPRISE! Never had any breakout for 1 year now.
Dan Kern, the founder of Acne.Org, did not include Butylene Glycol in his list of comedogenic ingredients to avoid because he knew that there's a low chance that it will cause acne. Ingredients rated 3 and higher in the comedogenic scale are the scariest and should be avoided at all cost.
Common Ingredients 1989 致粉刺數1
Ingredient Function：alcohols and their derivatives