DIY Skin Glow: How to Make a Lemon & Kojic Acid Soap Bar at Home

Tri Organics
2026-01-16T16:33:11+05:30

Introduction

Are you looking to create a soap that does more than just clean? Brightening soaps are among the most popular skincare products on the market today. The secret lies in pairing the right active ingredients with a moisturizing base.

Today, we are sharing a simple, professional-grade recipe using Kojic Acid (a powerful skin brightener) and Lemon Grass Oil. Unlike store-bought soaps that can be drying, this recipe uses our High-Glycerin Soap Flakes and Shea Butter to ensure your skin stays soft and hydrated while you treat uneven skin tone.

What You Will Need

Ingredients (Available at Tri Organics):

250g High Glycerin Soap Base Flakes: The foundation of your soap. Our flakes melt quickly and are rich in glycerin to draw moisture to the skin.

1 Teaspoon Kojic Acid Powder: The star ingredient. Known for reducing dark spots and pigmentation.

1 Tablespoon Unrefined Shea Butter: Adds a creamy, luxury feel to the lather.

20 Drops Lemon Grass Essential Oil: For a fresh citrus scent and natural astringent properties.

1 Teaspoon Distilled Water: To dissolve the Kojic Acid.

Equipment:

A heat-proof bowl (glass or stainless steel)

A silicone soap mold

A spray bottle with rubbing alcohol (to pop bubbles)

Step-by-Step Instructions

Step 1: Melt the Base Place your High Glycerin Soap Base Flakes into a heat-proof bowl. You can melt this using the "double boiler" method on a stove, or in the microwave in 30-second bursts. Stir gently until completely liquid.

Step 2: Add the Moisture While the base is hot, add the Shea Butter. The heat of the soap will melt the butter. Stir until fully incorporated.

Pro Tip: Do not let the soap boil! If it gets too hot, it can become rubbery.

Step 3: Prepare the Active Ingredient In a separate small cup, mix your Kojic Acid Powder with the warm distilled water. Stir until the white powder is completely dissolved and clear.

Why do we do this? Adding powder directly to the soap can leave gritty clumps. Dissolving it first ensures a smooth bar.

Step 4: Combine and Cool Let your melted soap base cool down slightly (to around 60°C).

Pour in your dissolved Kojic Acid solution.

Add the Lemon Grass Essential Oil.

Stir gently to avoid creating too many bubbles.

Step 5: Pour and Set Pour the mixture into your silicone mold. Immediately spray the top with rubbing alcohol to pop any air bubbles. Let it sit at room temperature for 2-4 hours until hard.

Why These Ingredients Work? (The Science)

Kojic Acid: It works by inhibiting tyrosinase, an enzyme necessary for the production of melanin. This helps fade sun spots and acne scars over time.

Lemon Grass Oil: Naturally antibacterial and astringent, it helps clean out pores and refresh the skin.

Glycerin & Shea: Kojic acid can sometimes be drying. We counter this by using a High-Glycerin base and adding Shea Butter, ensuring the skin barrier remains healthy.

Frequently Asked Questions

1. Can I use this soap on my face? Yes, but do a patch test first. Kojic Acid is potent. We recommend using it 2-3 times a week initially to see how your skin reacts.

2. How much Kojic Acid should I use? For "Melt and Pour" soaps, a safe usage rate is between 0.5% to 1%. Adding more than this can cause the acid to crystallize on the surface of the soap (a phenomenon called "blooming").

3. Does this soap need to cure? No! Because you are using Tri Organics Soap Base Flakes, the soap has already gone through the saponification process. Once it hardens, it is ready to use immediately.

Ready to formulate?

[Shop the Full Ingredients Bundle Here] and start your soap making journey today.