Cosmetics Formulation Development

ask for advice How to mix the rollers น้ำมันหอมระเหย If we do this in 10ml bottles, we should use น้ำมันหอมระเหย how many % good? I've been researching, 3% can be used for daily use, but it smells quite mixed. It's weak, so I tried it at 5% and it still smells faint, but if I mix it with 10%, it's a short term, but the smell is quite okay. So I'm not sure how much we should do. Is there any bad effect? If we use 10%, we may use it to inhale often instead of inhalers.

Hello, no problem. Inhalation น้ำมันหอมระเหย can be used in the desired concentration. can There isn't any danger.

Thank you very much :)