We all love it in our morning drinks to wake up. Yup, we're talking about caffeine!
Most of us only know caffeine as the kicker in coffee and certain teas, but you can get the concentrated powder for use in cosmetic products too (our Caffeine Powder is for EXTERNAL USE ONLY).
Caffeine has a couple of interesting benefits in personal care products - let's find out more.
What does Caffeine Powder do?
Caffeine is commonly used in eye gels and creams to depuff and boost circulation, leading to a more youthful and brightened look.
Caffeine can promote the dilation of blood vessels and accelerate contraction of striated muscle, giving a more toned appearance and helping improve the appearance of cellulite. It is therefore used in body products to help firm and tone the skin, and improve the appearance of cellulite.
Caffeine has a good ability to penetrate the skin barrier and is a powerful stimulant and circulation booster. It can be included in shampoos and hair products to boost hair growth. Overall, a pretty neat ingredient!
Formulating with Caffeine Powder
What is the solubility of Caffeine Powder?
Caffeine powder is soluble in water. I like to add it to the heated water phase of formulations.
It is not soluble on its own in oil, so you would require an emulsifier in this case.
What is the pH of Caffeine Powder?
Caffeine has a natural pH of about 6, but it is best to reduce the pH slightly to below 5.5.
Ensure that other ingredients and actives in your formula are compatible with lower pH levels.
How do you use Caffeine Powder?
The recommended usage rate for caffeine powder is 0.1 - 2% in formulations.
If you are sensitive to caffeine then we recommend using it very sparingly or perhaps leaving it out of your formulation altogether. While I haven't experienced any 'caffeine buzz' from using it at 0.5%, it is possible for those who are very sensitive to experience something, so just be mindful of this.
DO NOT INGEST THIS CAFFEINE POWDER - our Caffeine Powder is for external use ONLY! The consumption of Caffeine Powder, particularly when taken internally, may be toxic to the body.
If you are pregnant, we don't advise using caffeine.
How To Work With Caffeine Powder
In water based formulations, add the caffeine directly to the water. Some gentle heat may be required.
In emulsions, add the caffeine to the heated water phase, then process the formulation like normal. Ensure the pH is at 5.5 or below.
It is recommended to add an antioxidant such as tocopherol (Vitamin E) to prevent oxidation.
Which ingredients work well with Caffeine Powder
I like to add a soothing ingredient such as allantoin to products containing caffeine, as this can help to soothe the skin.
Caffeine can work well with most other actives and ingredients, as long as the pH is correct (and therefore those other ingredients should also be effective at that pH). Caffeine is a penetration enhancer, so it can actually assist other actives to get into the skin and be more effective.
You could pair caffeine with other stimulating actives such as ginseng and green tea to be more effective.
Which products typically contain Caffeine?
Caffeine is most commonly found in eye gels and creams to depuff, and in body creams. It can also be added to shampoos or leave in hair products.
Caffeine is best used in leave on products, for maximum exposure to the skin.
