Adjusting pH of Witch Hazel (Alcohol Free) Plus Allantoin with Triethanolamine

You have purchased Witch Hazel (Alcohol Free) Plus Allantoin, which has a natural pH between 3.8-4.5. You want to adjust this to a pH of 5-5.5 using Triethanolamine.

Based on the information, the burning sensation you experienced with a different witch hazel product was likely due to alcohol content, not the pH level. The Witch Hazel (Alcohol Free) Plus Allantoin you have is distilled and alcohol-free, and its natural slightly acidic pH is generally well-tolerated by the skin.

However, if you still wish to adjust the pH, you can use Triethanolamine 99%.

How to Adjust pH:

1. Triethanolamine 99% can be used to increase the pH (make it more alkaline).
2. The recommended usage rate for Triethanolamine 99% is 0.1-2.5% in cosmetic formulations.
3. To adjust the pH of 1 Kg of your Witch Hazel product, you will need to add Triethanolamine 99% gradually.
4. Since the exact amount needed depends on the starting pH and the desired final pH, it is best to test this in a small sample first.
5. Take a small, measured amount of your Witch Hazel product (e.g., 100g). Add a very small amount of Triethanolamine 99% (start with a few drops or 0.1% of the sample weight, which is 0.1g for a 100g sample). Mix thoroughly.
6. Measure the pH of the sample using a pH meter or pH strips.
7. Continue adding very small amounts of Triethanolamine 99%, mixing and testing the pH after each addition, until you reach your desired pH range of 5-5.5.
8. Once you have determined the amount of Triethanolamine 99% needed per gram or per 100g of the Witch Hazel product, you can calculate the total amount needed for your 1 Kg (1000g) batch.
9. Remember not to exceed the maximum recommended usage rate of 2.5% of Triethanolamine 99% (which is 25 grams per 1 Kg of the Witch Hazel product).
10. Mix the calculated amount of Triethanolamine 99% into your 1 Kg of Witch Hazel product thoroughly.

Triethanolamine 99% should be mixed into the formulation and not applied directly to the skin.