I became interested in making my own lotion from scratch after making it in a lab for the organic chemistry course I was taking. We used lanolin (sheep fat) which is pretty common in commercial lotions. In the lab, we experimented with different ingredients to see how they impacted the final lotion product.
I enjoyed the lab but wanted to make a vegan lotion, using plant based fats. I wanted to add scent and possibly color. I started googling recipes for diy lotion and quickly became frustrated. Many diy recipes for products like lotion and soap are just wrong. Lotions are emulsions, meaning there is a liquid portion blending with a fat/oil/wax portion. In order for this to occur, an emulsifying agent must be used. Far too many of the diy recipes I found were just blending fats together (won't moisturize skin and dosent really qualify as lotion) or missing the emulsifying agent (meaning the final product will separate when left standing)! I lost some faith in the internet diy community that day.
I started by looking at ingredient labels of lotions from my favorite natural body care brands, including Lush, Honest Co and the Body Shop. I looked at what ingredients overlapped, what was found in all the lotions. I researched the ingredients that stood out and started developing a recipe with them, following the model we used in the chemistry lab. While the chemicals in lotion making are fairly harmless, I strongly believe that a background knowledge of some chemistry basics is necessary to make a proper lotion from scratch.
The first recipe I concocted was:
5 cups of Water
1/2 cup Sweet Almond Oil
1/2 cup Emulsifying Wax
1/4 cup Stearic Acid
1 Tbsp Citric Acid
1 Tbsp Potassium Sorbate
1/2 teaspoon Vitamin E Oil
1 teaspoon Lavender Essential Oil
Blue & Red Cosmetic Grade Colorant
(yields 48 oz of lotion)
Pot one: emulsifying wax, almond oil and stearic acid
Pot two: water, potassium sorbate
Both pots are heated. Pot one is removed from heat as soon as wax has melted.
Pot two is removed from heat right before boiling and citric acid is added. At this point, I took the temperature of both pots to make sure they were close to each other.
Pot two is slowly added to pot one while stirring.
Stirring really helps the emulsifying agent do its job and keeps the oils and liquids from separating. I stirred for a solid 5 minutes and then let it sit, stirring every 20-30 minutes for the next 3 hours.
After the lotion had cooled for one hour, I added the lavender essential oil, vitamin E oil and cosmetic grade colorants. I didn't really measure these, just slowly added and stirred until I got the color and smell I was looking for. (I went for a light purple which was hard to capture in pictures)
Once the lotion had almost cooled completely (about 3 hours) I used a funnel to bottle my lotions. I'm really happy with the way the lotion turned out. I had fun labeling the containers too.
I used 8oz and 4oz containers for my lotion. This recipe yielded 48 oz of lotion. The consistency was somewhat liquidy making it ideal for a pump style container. It has a nice lavender scent and moisturizes the skin without leaving any greasy residue.
