Review of Homemade Lotion Formula

ถามโดย: peipeiwannida เมื่อ: February 23, 2021 ประเภทผลิตภัณฑ์: เครื่องสำอาง

คำถาม

I would like a formula for homemade lotion. The formula includes: 1. Extra virgin Coconut Oil 200 g, 2. Stearic Acid 60 g, 3. Emulsifying Wax (E-wax) 100 g, 4. Filtered water 1,400 g, 5. Glycerin 120 g, 6. Methylparaben 1 g, 7. Propylparaben 1 g, 8. Ethyl Alcohol 95% 10 cc, 9. Essential Oil 10 cc. Can this formula be used to make lotion, or do I need to add any other ingredients? Please review it.

คำตอบ

Analysis of Your Lotion Formula

Based on the ingredients and quantities provided, this formula is unlikely to result in a typical pourable lotion consistency. It would likely be a very thick cream or potentially a semi-solid balm.

Here's a breakdown:

  • High Oil/Wax Phase: The combined amount of Fractionated Coconut Oil, Stearic Acid, and Emulsifying Wax is quite high relative to the water amount. Specifically, the quantities of Stearic Acid (60g) and Emulsifying Wax (100g) are much higher than typically used in a lotion (where total emulsifier/thickener might be in the 5-15% range). This will contribute significantly to the thickness.
  • Preservation Concerns: The total amount of Methylparaben (1g) and Propylparaben (1g) is likely insufficient to adequately preserve a water-based product like lotion against microbial growth over time. A more effective broad-spectrum preservative system or a higher concentration of parabens (within recommended safety limits) would be necessary.
  • Glycerin Amount: The amount of Glycerin (120g) is quite high and might make the final product feel sticky on the skin.
  • Ethyl Alcohol: The small amount of Ethyl Alcohol (10 cc) is unlikely to have a significant functional impact on the formula at this concentration.

To create a more standard lotion, you would likely need to:

  1. Significantly reduce the amounts of Emulsifying Wax and Stearic Acid.
  2. Increase the concentration or change the type of preservative to ensure adequate protection.
  3. Potentially reduce the amount of Glycerin if stickiness is a concern.

While the ingredients themselves (Fractionated Coconut Oil, Stearic Acid, Emulsifying Wax, Glycerin, Methylparaben, Propylparaben, Ethyl Alcohol, Essential Oil) are commonly used in cosmetic formulations, their proportions in this specific recipe are unusual for a lotion.

ผลิตภัณฑ์ที่เกี่ยวข้องที่กล่าวถึง

Glycerin (USP/Food Grade)
Glycerin (USP/Food Grade)
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Fractionated Coconut Oil
Fractionated Coconut Oil
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Stearic Acid (Stearic: 39-45%, Palmitic: 53-60%)
Stearic Acid (Stearic: 39-45%, Palmitic: 53-60%)
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Ethyl Alcohol (96% , Perfumer Grade, Low-Odor)
Ethyl Alcohol (96% , Perfumer Grade, Low-Odor)
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Emulsifying Wax 1000 (e.q. Emulgade 1000 NI)
Emulsifying Wax 1000 (e.q. Emulgade 1000 NI)
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