Whitening Lotion Formula with Arbutin
| Component | Quantity (grams) | Function |
| Aqueous Phase | ||
| Deionized Water | 600 | Solvent, moisturizing |
| Glycerin | 50 | Moisturizing, enhancing skin affinity |
| Butylene Glycol | 30 | Moisturizing, enhancing skin absorption |
| Sodium Hyaluronate | 2 | Moisturizing, enhancing skin elasticity |
| Arbutin | 3 | Whitening, inhibiting melanin production |
| Methylparaben | 0.2 | Preservative |
| Propylparaben | 0.1 | Preservative |
| Oil Phase | ||
| Ethylhexyl Palmitate | 50 | Nourishing, enhancing skin affinity |
| Cetyl Alcohol | 20 | Thickening, stabilizing the lotion |
| Stearic Acid | 15 | Emulsifying, nourishing |
| Glyceryl Stearate | 10 | Emulsifying, nourishing |
| Sweet Almond Oil | 10 | Nourishing, soothing |
| Emulsifier | ||
| Polysorbate - 60 | 5 | Emulsifying |
| pH Adjuster | ||
| Citric Acid | As needed | Adjusting pH to 5.5 - 6.5 |
| Fragrance | As needed | Scenting |
Whitening Effectiveness
Arbutin is the key whitening ingredient in this formula. It effectively inhibits the activity of tyrosinase, reducing melanin production and achieving a whitening effect on the skin.
Moisturizing and Nourishing
The formula includes multiple moisturizing agents such as glycerin, butylene glycol, and sodium hyaluronate, which provide ample hydration to the skin and maintain its moisture balance. Additionally, ethylhexyl palmitate and sweet almond oil nourish the skin and enhance its barrier function.
Gentle on Skin
The emulsifiers and preservatives used in this formula are mild and cause minimal irritation to the skin, making it suitable for all skin types.
Good Stability
The formula is designed and processed carefully to ensure the lotion has good stability, preventing issues like separation or spoilage during storage and use.
01
/
Preparation of Aqueous Phase
- Add deionized water to a mixing pot and start stirring.
- Add glycerin, butylene glycol, and sodium hyaluronate sequentially according to the formula, stirring until completely dissolved.
- Add arbutin and stir until evenly distributed.
- Add methylparaben and propylparaben, stirring until well mixed.
02
/
Preparation of Oil Phase
- Add ethylhexyl palmitate, cetyl alcohol, stearic acid, glyceryl stearate, sweet almond oil, and polysorbate - 60 to another mixing pot. Start stirring and heat to 75 - 80°C, stirring until all ingredients are completely dissolved.
03
/
Emulsification
- Heat the aqueous phase to 75 - 80°C, maintaining stirring.
- Slowly add the oil phase to the aqueous phase while continuously stirring. Control the stirring speed to ensure the oil phase is uniformly dispersed in the aqueous phase.
- Continue stirring and slowly cool the mixture to 40 - 45°C after emulsification is complete.
04
/
pH Adjustment
- Adjust the pH of the lotion to 5.5 - 6.5 using a citric acid solution, stirring until uniform.
05
/
Fragrance Addition
- At 40 - 45°C, add the fragrance as needed and stir until evenly distributed.
06
/
Cooling and Packaging
- Cool the lotion to room temperature and let it sit for a while to observe its stability.
- Confirm that the lotion shows no signs of separation, discoloration, or other abnormalities before proceeding to packaging.
Stability of Arbutin
Arbutin is less stable under high temperatures and extreme acidic or alkaline conditions. Therefore, it is important to control the temperature and pH in the formula to avoid compromising its efficacy.
Preservative Addition
The quantity of preservatives should strictly comply with relevant regulations and standards to ensure product safety.
Stability Testing
Conduct stability tests on the lotion during production, including centrifuge stability tests and cold/hot stability tests, to ensure its stability during storage and use.
Skin Testing
It is recommended to perform skin tests before launching the product to ensure its safety, especially for its suitability on sensitive skin.