The use of turmeric in artisan soap-making has sparked debate among soap makers and skincare enthusiasts. Many claim that turmeric soap can brighten the skin and reduce hyperpigmentation, while others argue that its effectiveness is overstated, particularly in a rinse-off product like soap.
This post explores the real benefits of turmeric, addresses common myths, and discusses other natural additives used in handmade soap.
Turmeric in Skincare: What Does Science Say?
Turmeric (Curcuma longa) is well-known for its anti-inflammatory, antioxidant, and antimicrobial properties. The active compound, curcumin, has been studied for its potential in treating skin conditions like acne, eczema, and hyperpigmentation (Vaughn et al., 2016). A systematic review found that turmeric can inhibit melanin production, which may help reduce dark spots and even skin tone (Katta & Desai, 2014).
However, these studies are based on direct applications such as creams, masks, and serums, where turmeric remains on the skin for extended periods. The problem? Soap is a wash-off product, meaning it does not stay on the skin long enough for curcumin to have a significant effect on melanin production.
Does Turmeric Soap Really Brighten Skin?
The biggest claim surrounding turmeric soap is that it helps with skin brightening and hyperpigmentation.
The Myth: “Turmeric soap will remove dark spots and lighten the skin over time.” The Reality: There is no strong scientific evidence to prove that turmeric soap can fade dark spots effectively. While turmeric has skin-benefiting properties, its effect in soap form is likely minimal due to brief skin contact.
What it CAN do:
- Help reduce inflammation and redness, which may improve the appearance of acne-prone skin.
- Offer mild antibacterial benefits, which could help prevent breakouts.
- Give the skin a temporary glow, especially when combined with a nourishing soap base.
However, if customers are looking for significant skin-brightening effects, a leave-on product (such as a face mask or serum with turmeric extract) would be far more effective.
Other Natural Additives in Soap: What Works Best?
Besides turmeric, many natural ingredients are used in handmade soaps to enhance skincare benefits. Some have proven benefits, while others are mostly marketing hype.
Activated Charcoal – Known for drawing out impurities, great for oily and acne-prone skin. Best used in deep-cleansing soaps (Newman et al., 2017).
Aloe Vera – A well-documented soothing ingredient for dry and irritated skin. However, its hydrating benefits are best achieved in lotions or gels rather than soap (Vogue, 2023).
Honey – Naturally antibacterial and humectant (locks in moisture). Unlike turmeric, it retains some beneficial properties in soap (Kwakman & Zaat, 2012).
Goat’s Milk – Contains lactic acid, which can help with mild exfoliation and softening the skin. Works well in soap when properly formulated (Green et al., 2019).
Beef Tallow – Rich in fatty acids and vitamins, making it highly moisturising. However, its benefits depend on individual skin type (PopSugar, 2023).
Should Soap Makers Continue Using Turmeric?
While turmeric won’t dramatically fade dark spots in soap form, it still has value in handmade soaps. It can: Enhance the visual appeal of soaps with its rich golden colour. Provide mild anti-inflammatory benefits, useful for acne-prone or irritated skin. Be an attractive selling point for customers who love natural skincare ingredients.
However, soap makers should avoid overstating turmeric’s benefits, particularly in skin-brightening claims. If customers seek serious hyperpigmentation treatment, they should be guided towards serums, masks, or dermatologist-recommended treatments.
Final Verdict:
Turmeric is a great addition for its aesthetic appeal and mild skin benefits. It is unlikely to be an effective brightening agent in soap form.
References
• Vaughn, A. R., Branum, A., & Sivamani, R. K. (2016). Effects of Turmeric (Curcuma longa) on Skin Health: A Systematic Review of the Clinical Evidence. Journal of Alternative and Complementary Medicine, 22(4), 284–290.
• Katta, R., & Desai, S. P. (2014). Herbal Alternatives to Traditional Acne Therapy. American Journal of Clinical Dermatology, 15(6), 479–488.
• Kwakman, P. H. S., & Zaat, S. A. J. (2012). Antibacterial components of honey. IUBMB Life, 64(1), 48–55.
• Newman, D. J., Cragg, G. M., & Snader, K. M. (2017). Natural products as sources of new drugs over the period 1981–2014. Journal of Natural Products, 80(3), 321–335.
• Green, M. S., Stott, G. H., & Ingram, M. (2019). Effects of goat’s milk on human skin microbiota. Journal of Dairy Science, 102(5), 4321–4330.
• PopSugar. (2023). Beef Tallow Skin Care: Trend or True Moisturiser?. Retrieved from https://www.popsugar.com/beauty/beef-tallow-skin-care
• Vogue. (2023). The Benefits of Aloe Vera in Skincare. Retrieved from https://www.vogue.com/article/aloe-vera-acne