Natural and commercial soaps look similar but are made through very different processes. Here's what that difference means for your skin — and why it actually matters.

The process is completely different

Commercial soap is made through an industrial process where the glycerin that naturally forms during soap-making is extracted and sold separately to the cosmetics industry. The bar you're left with has the glycerin stripped out.

Cold-process natural soap is made from oils and lye (sodium hydroxide), with the glycerin left in. Glycerin is a natural humectant — it draws moisture from the air into your skin. Keeping it in the soap is the main practical difference between a handmade bar and a commercial one.

What commercial soap does to your skin

High-pH commercial soap (most bars are pH 9–10) disrupts the skin's acid mantle, which sits at pH 4.5–5.5. A disrupted acid mantle means bacteria get through more easily, moisture escapes faster, and the skin feels tight and dry after washing. Many people treat this with moisturiser after every wash — which would largely be unnecessary with a skin-friendly soap in the first place.

What to look for in a natural soap

  • Real oils as the base — coconut oil, olive oil, shea butter, castor oil. These appear in the ingredients list.
  • No SLS or synthetic detergents — sodium lauryl sulfate is the most common, found in most commercial bars and liquid soaps.
  • Glycerin retained — cold-process soaps retain natural glycerin. A soap that lists glycerin separately as an added ingredient might still be a commercial detergent bar with glycerin added back in.
  • Minimal fragrance — natural scent from essential oils or botanicals rather than synthetic fragrance, which is a common skin irritant.

Khan Herbals makes cold-process bars with natural oil bases and no synthetic detergents. Browse our soap range here.

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