Formulating Sunscreen Body Oil (SPF 50, PA++++)
Question
How can I formulate a body oil with SPF 50 and PA++++?
- What specific sunscreen ingredients should be used?
- What are the required amounts for a 100 ml batch?
Answer
To create a sunscreen body oil with SPF 50 and PA++++, it is recommended to use a pre-blended chemical sunscreen that is oil-soluble for clarity and ease of formulation.
Recommended Sunscreen Ingredient
SPF Protect Ultra™ III is the most suitable choice. It is a Broad Spectrum (UVA/UVB) sunscreen blend that is highly stable and provides a non-sticky feel.
- At 20% usage: Provides approximately SPF 50.
- At 25% usage: Provides approximately SPF 70-100 and ensures high UVA protection (PA++++).
Sample Formula for Sunscreen Body Oil (100 ml / 100 g)
This formula focuses on a clear, lightweight, and non-greasy texture.
| Ingredient | Percentage (%) | Amount for 100g |
|---|---|---|
| SPF Protect Ultra™ III (Main Sunscreen) | 25% | 25 g |
| LipidSoft™ SPF (Solubilizer & reduces stickiness) | 20% | 20 g |
| Light Base Oil (e.g., Mineral Oil, Jojoba Oil, or Caprylic/Capric Triglyceride) | 54.5% | 54.5 g |
| Vitamin E (Tocopheryl Acetate) (Antioxidant) | 0.5% | 0.5 g |
| Total | 100% | 100 g |
Mixing Instructions:
- Combine SPF Protect Ultra™ III and LipidSoft™ SPF in a mixing container. Stir until homogeneous.
- Add the Light Base Oil and Vitamin E.
- Stir the mixture thoroughly. If the mixture is not perfectly clear, you can apply gentle heat (approx. 50-60°C) while stirring to help the components integrate.
- Once cooled and clear, transfer to a spray or pump bottle.
Important Notes:
- PA++++ Requirement: Using the sunscreen blend at 25% ensures you reach the highest UVA protection level (PA++++).
- Texture: Using an ester like LipidSoft™ SPF is crucial for a body oil to prevent the "heavy" or "greasy" feeling often associated with sunscreens.
- Testing: While this ratio is designed to achieve SPF 50+, the final SPF/PA value can vary slightly based on the base oils used. For commercial products, laboratory testing is required to confirm the final rating.
Follow-up Replies
Question:
How can I formulate a body oil with SPF 50 and PA++++? If I already have a body oil base (with fragrance already mixed in), can I just add sunscreen ingredients to it?
What are the required amounts for a 100 ml batch, and can I use these specific ingredients:
SPF Protect Ultra™ III (UVA+UVB)LipidSoft™ SPFMineral Oil (Paraffinum Liquidum) Light (26cst)
Answer:
Yes, you can add sunscreen ingredients to your existing body oil. However, there are a few factors to consider regarding the mixing ratio and the dilution of your existing fragrance.
1. Adding to an Existing Body Oil (100 ml)
To achieve SPF 50 and PA++++ using SPF Protect Ultra™ III, you need to maintain a concentration of approximately 25% in the final mixture to ensure high UVA protection (PA++++).
If you start with 100 ml of your existing body oil, you should add the following:
- Existing Body Oil: 100 ml
- SPF Protect Ultra™ III: ~42 ml
- LipidSoft™ SPF: ~25 ml
Total Volume: Approximately 167 ml
Important Considerations:
- Fragrance Dilution: Since the total volume increases significantly, the scent of your original body oil will become much lighter. You may need to add more fragrance.
- Clarity: If the mixture appears cloudy after mixing, apply gentle heat (approx. 50-60°C) while stirring until it becomes clear.
2. Suitability of Your Selected Ingredients
The ingredients you mentioned are excellent choices for a sunscreen body oil:
- SPF Protect Ultra™ III (UVA+UVB): A highly stable, broad-spectrum sunscreen blend that is easy to work with and non-sticky.
- LipidSoft™ SPF: An essential ester that helps dissolve the sunscreen and significantly improves the skin feel by reducing oiliness.
- Mineral Oil Light (26cst): A stable, non-rancid base oil that provides good emolliency.
Recommended New Formulation (for 100g)
If you prefer to create a fresh batch to ensure the best texture and scent balance, use this ratio:
- SPF Protect Ultra™ III: 25% (25 g)
- LipidSoft™ SPF: 20% (20 g)
- Mineral Oil Light: 54% (54 g)
- Fragrance: 1% (1 g)
Mixing Method: Combine all ingredients and stir until homogeneous. If needed, use low heat to ensure complete clarity.
Related Products Mentioned
Fractionated Coconut Oil
LipidSoft™ SPF
