Lotion emulsifiers play a crucial role in the formulation of creams and lotions, enabling the mixing of oil and water creating a smooth, stable mixture that is also referred to as an emulsion.
An emulsion is a mixture of two immiscible liquids in this case water and oil for lotions as the mixing process is two phases, (the Water /aqueous phase) and various oils (the oil phase). The key to a successful lotion making process is dependent on selection and use of the right emulsifiers, which help to stabilize and improve the texture of your final product which is either lotion or a cream.
Emulsifiers are surfactants that lower the surface tension(viscosity of the mixed liquid-Water and oil ) , allowing them to blend and mix together more effectively. Emulsifiers are categorized into three main types: anionic, cationic, and nonionic emulsifiers.
Each emulsifier has distinct properties producing different formulations from hand lotions,body lotions as well as body creams. Nonionic emulsifiers are commonly used in personal care products as they are mild and extremely compatible with a wide range of ingredients.
Emulsifier selection process :
Selecting the appropriate emulsifier is critical for achieving the desired consistency, stability, and feel of your final product at the formulation process . At formulators Haven the products emulsifiers frequently purchased from the shop located at Jevanjee mall they include :
- Glyceryl Stearate SE: A widely used nonionic emulsifier, excellent for creating stable emulsions with a creamy texture the glyceryl stearate binds the oil and water ingredients together in the formulation process including the final products such as preservatives used in the formulation .
- Cetearyl Alcohol: Both a thickener and emulsifier, it provides a rich feel to lotions and is often combined with other emulsifiers.
- Polysorbate 20: A versatile emulsifier effective for lighter lotions, enhancing their spreadability and texture.
- Stearic Acid :This emulsifier is a fully saturated fatty Acid as it’s a combination of plant and animal fats.Stearic acid is a multi tasker fatty acid giving the skin a feel good smooth and nice feel.The emulsifier is best used on body creams as the emulsifier can stabilize water and oil mixes.
- Glycerol monostearate :These emulsifiers serve as a lubricant to the skin giving a gentle ,smooth appearance that adds hydration to the skin as it traps moisture on the skin and hair preventing dehydration and damage traps moisture on the skin and hair to prevent dehydration and damage. Moreover, glyceryl stearate also binds other ingredients together in a formulation
When formulating the lotions or body creams always consider factors such as desired product consistency, skin feel, and potential interactions with other ingredients during the formulation process..
Formulation Process :
The process of creating a lotion with emulsifiers typically involves the following steps:
- Water and oil Phase Separation: Prepare your oil and water phases separately. The oil phase may include oils, butter, and solid fats, while the water phase contains distilled water, hydrosols, or extracts.
- Hot plate Heating: Heat both phases to a similar temperature, usually around 70-80°C (158-176°F), to ensure the emulsifier fully melts and activates. The heating process recommends temperature measurements you can use a digital thermometer that is available at the formulators Haven shop
- Combining Phases: Slowly add the oil phase to the water phase while continuously mixing using a silicone spatula. Depending on the production scale, you can use a handheld-mixer, whisk, or high-shear mixer.
- Cooling and Adding Extras: Once the emulsion starts to form and cool down, any heat-sensitive ingredients such as essential oils, preservatives, or vitamins can be added.
- Stability Testing: After formulation, it’s important to conduct stability tests which can include observing the product for separation, texture changes, and microbial growth.
Conclusion :
Using lotion emulsifiers effectively can significantly enhance the quality of your lotions and creams. To understand the functions of different emulsifiers you can always ask the experts at the Formulators Haven shop located in Nairobi town at the Jeevanjee Gardens Shopping mall, shop 55 and 52 their cell phone contact are: 074181383 Or 0740139016 Or 0797732620. The website www.formulatorshaven.com can provide further guidance on emulsifier pricing. They carefully provide additional knowledge in selecting the right ones, and following a structured formulation process, you can create products that are not only stable but also pleasant to use. With practice and experimentation, formulators can refine their techniques and develop unique lotions that cater to diverse skincare needs, ultimately leading to successful and satisfying results for consumers
