What Makes Cold Process Soap Better Than Commercial Soap

In simple terms, cold process soap tends to be gentler on the skin, longer-lasting and made with fewer synthetic ingredients than commercial soap. It’s a slower method, but one that prioritises the quality of the bar rather than speed of production.

Walk down any supermarket aisle and you’ll find shelves full of brightly packaged soap. It looks appealing, smells strongly and promises a lot. But not all soap is made in the same way - and once you understand the difference, it’s hard to go back.

Cold process soap is made slowly, in small batches, using traditional methods. Commercial soap is produced at scale, often with a very different set of priorities. Here’s what sets them apart.

What is cold process soap?

Cold process soap is made by combining oils with a lye solution, creating a natural chemical reaction called saponification. Over time, this transforms the ingredients into soap rich in naturally occurring glycerin.

At Bohemia & Flower, each batch is made in small quantities using hand-built wooden moulds, lined with paper rather than silicone. Once poured, the soap cut and hand stamped and is then left to air cure in trays for a minimum of four weeks, often closer to six. 

It’s a slow process, but that’s where the quality comes from.

Glycerin is left in

One of the biggest differences is glycerin.

Glycerin is a natural by-product of soap making and is known for its ability to draw moisture to the skin. In cold process soap the glycerin naturally remains in the bar.

In commercial soap production, glycerin is often chemically removed and used elsewhere in cosmetics. This can leave the final bar feeling more harsh & drying on the skin.

Cold process soap vs commercial soap a comparison

• Cold process soap: handmade, retains glycerin, made with plant oils and essential oils
• Commercial soap: mass-produced, glycerin often removed, contains synthetic detergents and fragrances
• Cold process soap: cures over weeks, creating a harder, longer-lasting bar
• Commercial soap: manufactured quickly for consistency and shelf life
• Cold process soap: gentler, creamier lather
• Commercial soap: additives to make it more foamy but can feel drying

Fewer, more considered ingredients

Cold process soap is typically made with a short list of ingredients - plant oils, clays, botanicals and essential oils. Each one has a purpose.

Rather than using palm oil, Bohemia & Flower soap uses coconut oil which creates a hard, long-lasting bar with a creamy lather. The result is a soap that feels solid in the hand and holds its shape over time.

Plants are also used creatively to bring natural colour to each bar. Grove takes on its golden tone from dried calendula petals, while Mountain is coloured with alkanet root infused in oil, giving a soft natural purple.

Commercial soaps are often made with detergents, surfactants, synthetic fragrances, stabilisers & preservatives, these are added to do a whole host of jobs, from increasing lather & shelf life to reducing production costs and increasing profit margins. The result is consistent, but not always kind to the skin.

A gentler, slower cleanse

Cold process soap doesn’t try to strip the skin. Instead, it cleanses gently while maintaining the skin’s natural balance.

The lather is both creamy & bubbly and the bars are designed to hold their structure - not turning to mush or cracking as they move between wet and dry.

After use, the skin is left clean, comfortable and lightly scented with the natural essential oil blends used in the soap bars.

Made in small batches

Each batch is poured, cut and finished by hand. There’s variation and that’s part of the appeal, Bohemia & Flower soap is completely handmade so no two bars are ever completely identical.

Commercial soap is produced on a much larger scale, designed for speed, uniformity and long shelf life.

Better for low-waste living

Cold process soap lends itself naturally to a more considered, low-waste routine. Solid bars replace plastic bottles and packaging is kept minimal or removed altogether.

It’s a small shift, but one that adds up over time.

So, is it “better”?

Better depends on what you’re looking for.

If you want something quick, cheap, uniform and highly fragranced, commercial soap does that well. But if you’re looking for a slower, more thoughtful approach to everyday essentials - something that feels good to use and is made with care, by human hands - cold process soap offers something different.

For me, it is always about the process. The transformation of simple plant-based ingredients - many of which could be found in any kitchen - into a usable bar of soap feels like a kind of everyday alchemy. That, and a desire to create something kinder for sensitive skin.

If you’d like to explore the full range, you can browse the botanical soap collection.