Brightening Sepiwhite Lotion – Complete Formulation Guide

Skin brightening formulations require the right balance of effective actives, correct pH, and stable emulsification. This Brightening Sepiwhite Lotion is designed to help reduce dark spots, improve overall skin radiance, and support even skin tone using ECOCERT-certified Sepiwhite combined with Tranexamic Acid.

This formulation is suitable for beginner to intermediate cosmetic formulators and can be used in natural and clean beauty products.

What is Sepiwhite?

Sepiwhite (INCI: Undecylenoyl Phenylalanine) is a skin-brightening active that works by regulating melanin production. It helps reduce hyperpigmentation, dark spots, and uneven skin tone without causing skin irritation.

Sepiwhite is ECOCERT certified, making it suitable for natural skincare formulations. It is compatible with a wide range of cosmetic ingredients and works effectively across broader pH levels.

Key Benefits of Sepiwhite in Skincare

• Improves overall skin brightness and radiance
• Gentle and suitable for sensitive skin
• ECOCERT approved for natural formulations
• Compatible with most cosmetic actives
• Effective at wider pH ranges

Why Combine Sepiwhite with Tranexamic Acid? 

Sepiwhite targets melanin regulation, while Tranexamic Acid works by reducing inflammation-induced pigmentation. When used together, they create a synergistic brightening effect, making the formulation more effective for concerns such as:

• Post-inflammatory hyperpigmentation (PIH)
• Melasma
• Uneven skin tone
• Dull complexion

For faster visible results, Glutathione (0.2%) can optionally be added as an antioxidant and brightening booster.

Ingredient Breakdown and Functions

• 1,3 Propanediol: Lightweight humectant that improves hydration and skin feel
• Hyaluronic Acid: Deep hydration and helps improve lotion consistency
• Grapeseed Oil: Non-comedogenic, lightweight oil suitable for most skin types
• Olivem 1000: Natural, one-pot emulsifier that does not require co-emulsifiers
• Green Tea Extract: Provides soothing and anti-inflammatory benefits
• Sepiwhite: Primary skin-brightening active
• Tranexamic Acid: Helps reduce pigmentation and uneven tone
• Euxyl PE 9010: Broad-spectrum preservative effective at pH up to 6.5
• Fragrance Oil: Optional; can be omitted for sensitive skin formulations

Brightening Sepiwhite Lotion Formula

Phase A

• 1,3 Propanediol – 3%
• Hyaluronic Acid – 0.1%

Phase B

• Olivem 1000 – 5%
• Grapeseed Oil – 10%

Phase C

• Distilled Water – 77.7%
• Tranexamic Acid – 2%
• Sepiwhite – 0.2%

Phase D

• Green Tea Extract – 0.5%
• Fragrance Oil – 0.5%
• Euxyl PE 9010 – 1%

Equipment Required

• Pump bottles
• 100 ml glass beakers
• Glass or stainless steel stirring rods and spatulas
• Heating mantle or double boiler
• Precision weighing scale (accurate to 0.01 g)
• Measuring cups
• Gloves, head cap, and safety goggles

Step-by-Step Formulation Procedure

1. Measure Phase A ingredients. Disperse Hyaluronic Acid in 1,3 Propanediol and mix until evenly hydrated.
2. Measure Phase B and Phase C ingredients separately.
3. Combine Phase A, B, and C in a heat-resistant beaker.
4. Heat the mixture using a double boiler until Olivem 1000 is completely melted.
5. Blend using a hand blender in short intervals until a smooth, lotion-like consistency is achieved.
6. Allow the mixture to cool below 40°C, then add Phase D ingredients.
7. Blend again until uniform.
8. Check and adjust the pH to 6.0–6.3 for optimal compatibility with Sepiwhite and Tranexamic Acid.

pH, Stability, and Compatibility Notes

• Ideal pH range: 6.0–6.3
• Avoid strong acids that reduce pH below 5
• Compatible with most brightening and soothing actives
• Perform stability, microbial, and patch testing before commercial use

How to Use Sepiwhite Brightening Lotion

• Apply once daily as part of a night-time skincare routine
• Always use a broad-spectrum sunscreen (SPF 30 or higher) during the day when using brightening products
• Consistent use may show visible results in 4–6 weeks

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FAQs

1. Is Sepiwhite safe for daily use?

Yes, when formulated correctly, Sepiwhite is safe for daily use.

2. Can Sepiwhite be used in natural formulations?

Yes, Sepiwhite is ECOCERT certified and suitable for natural and clean beauty products.

3. How long does it take to see results?

Most users notice visible brightening after 4–6 weeks of consistent use.

4. Is this formulation beginner-friendly?

Yes, the use of Olivem 1000 makes this a simple, one-pot emulsification process.