My face wash cream got a problem a couple of months after it was made. There were some white particles appearing in it. I checked the pH and it changed insignificantly. I'm here to ask if anyone has any ideas about the reasons and solutions for this problem.
Here is my formula:
Etidronic acid: 0,12%
Sodium cocoyl isethionate: 6,0%
Cocoamidopropyl betaine: 12,0%
Decyl glucoside: 5,0%
Dicaprylyl ether and Lauryl alcohol (Cetiol LDO): 0,5%
Glycol distearate, Sodium laureth sulfate and Cocamide MEA (Euperlan KE 4616): 5,0%
Glycol distearate (Euperlan PK 771 IS): 2,5%
Acrylates/Beheneth-25 Methacrylate Copolymer (Tinovis GTC UP): 3,0%
Methylisothiazolinone and Methylchloroisothiazolinone: 0,00075%
Red onion extract: 1,0%
Arctium majus root extract: 1,0%
Aloe vera extract: 0,5%
I found out that the rheology modifier Tinovis GTC UP is incompatible with cationic surfactants while Cocoamidopropyl betaine has cationic character with the quaternary ammonium cation but I'm not sure if this interaction is the cause. So I'm so glad to hearing from you guys. Thanks in advance.