Spirulina is a blue-green microalgae (Arthrospira platensis) that has thrived in alkaline lakes and waterways for billions of years, making it one of the oldest life forms on Earth. Long recognized as a nutritional powerhouse — rich in protein, vitamins, minerals, and antioxidants — spirulina has more recently gained recognition as a potent skincare ingredient. Its deep blue-green pigment and dense nutrient profile translate beautifully into soap and skincare formulations.
In cold process soap, spirulina powder contributes a rich, earthy green color that can range from soft sage to deep forest, depending on concentration. Because it’s a natural colorant, results can vary slightly from batch to batch, which adds to the handcrafted character of each bar. Beyond color, spirulina brings a wealth of skin-beneficial compounds to the formula, including chlorophyll, beta-carotene, and essential fatty acids.
For the skin, spirulina is celebrated for its antioxidant and anti-inflammatory properties. It helps protect against environmental stressors, supports skin renewal, and may help reduce the appearance of dullness and uneven tone. Its chlorophyll content gives it natural deodorizing qualities as well. Whether you’re drawn to its vivid color or its skin-nourishing benefits, spirulina brings ancient, living vitality to every bar it graces.
Here are a few of our products that use this ingredient:
