A handmade soap and a mass-produced bar can look much the same on the bathroom shelf. Both should clean your skin. Both can smell good, produce a satisfying lather and last for weeks when looked after properly.
Handmade soap vs mass-produced soap: what’s the difference?
The differences lie in the formula, how the bar is made, the scale of production and how much the maker can tell you about what went into it.
There is no simple rule that says every handmade soap is good and every factory-made bar is poor. “Handmade” is not a guarantee that a product will suit every person, just as “mass-produced” does not tell you everything about the quality of a formula.
To make a fair comparison, it helps to look beyond the front of the pack.
The quick answer
Handmade soap is usually made in smaller batches, with more direct handling at each stage. Traditional cold-process soap is made by combining oils with an alkali, then allowing the resulting bar to set and cure.
A mass-produced cleansing bar may be traditional soap, a synthetic detergent bar or a combination of the two. The right choice depends on its actual ingredients, your preferences and how you intend to use it.
First, what do we mean by soap?
Traditional soap is made by combining fats or oils with an alkali, usually sodium hydroxide when making a solid bar. The reaction between them is called saponification.
Although sodium hydroxide is involved in making the soap, it is not there to act as a cleansing ingredient in the finished bar. In a properly formulated soap, the alkali reacts with the oils during saponification rather than remaining as free caustic lye.
Not every solid bar sold for washing is made in this way. Some use synthetic cleansing ingredients, often called surfactants, instead of traditional soap. Others use a combination of soap and synthetic surfactants.
These products are sometimes called syndet bars, short for synthetic detergent bars. They can look and behave much like soap, but the underlying formula is different.
This is why “handmade soap versus commercial soap” is not quite the right comparison. Handmade soap is a commercial product too. A more useful comparison is between a small-batch cold-process soap and a high-volume soap or cleansing bar.
What does handmade soap actually mean?
“Handmade” describes the production process. It usually means that people are directly involved in mixing, pouring, cutting, finishing and packing the product, rather than the whole process taking place on a highly automated manufacturing line.
It does not automatically mean that the soap is:
- Organic
- Vegan
- Fragrance-free
- Free from allergens
- Suitable for every skin type
- Better for the environment
Those questions can only be answered by looking at the individual product, its ingredients and the way it is packaged.
Small-batch soapmaking is a hands-on craft. At Highland Soap Co, people are directly involved throughout, from mixing and pouring to cutting, curing and wrapping the bars. The process draws on a traditional cold-process method and gives each bar a clear connection to the workshop, the Scottish Highlands and the people who made it.
That does not make every handmade soap better by definition, but it is a genuine point of difference from highly automated production.
How we make handmade soap in the Scottish Highlands
Our cold-process soaps are made at our workshop in Fort William, between Old Inverlochy Castle and the River Lochy, with Ben Nevis looking over us.
We make one 25kg block at a time, starting with a blend of seven vegetable oils, including shea butter and cocoa butter. The oils are combined with a sodium hydroxide solution to begin the process of saponification.
The mixture warms naturally as the reaction takes place. Once it has cooled, we cut the block into individual bars using piano wire, then leave them to cure fully before they are ready to go on sale.
It is a slow, hands-on process. From mixing the oils to wrapping the finished bars, each batch passes through the workshop rather than emerging from a continuous industrial production line.
Our handmade bars weigh 190g and are available in a range of scents and recipes. Ingredients vary between products, so every product page includes the full list for that particular bar.
Handmade soap and mass-produced bars compared
There is a great deal of variation within both categories, but the table below covers some of the common differences.
| What to compare | Highland Soap Co handmade soap | Mass-produced soap or cleansing bar |
|---|---|---|
| Production scale | Made one 25kg block at a time | Usually made in much larger volumes |
| Method | Traditional cold-process soapmaking | May be traditional soap, a synthetic detergent bar or a blend |
| Cleansing base | Saponified vegetable oils | Varies considerably by product |
| Handling | Mixed, cooled, cut, cured and wrapped in small batches | Often produced on automated or semi-automated lines |
| Ingredients | Vegetable oils and butters, with botanicals, essential oils and fragrance ingredients varying by bar | Can range from very short formulas to more complex combinations of surfactants, oils, fragrance and other ingredients |
| Appearance | Small variations can occur between batches | Usually designed to be highly uniform |
| Traceability | The maker has direct oversight of each batch | Depends on the manufacturer and supply chain |
| Price | Reflects smaller batches and more hands-on production | Large-scale manufacturing can reduce the cost per bar |
| Suitability | Depends on the individual recipe and user | Depends on the individual recipe and user |
A large-scale manufacturer can make a carefully formulated product, and a small producer can make a poor one. Scale is one part of the picture, not a verdict on the finished bar.
Is handmade soap the same as natural or organic soap?
Handmade, natural and organic describe different things.
Handmade refers to how a product was made.
Organic normally relates to how particular ingredients were grown, produced or certified. A handmade product is not automatically organic.
Natural is a broad term and does not give you a complete description of a formula. The ingredient list provides much more useful information.
Vegan means the product contains no animal-derived ingredients. Handmade soap is not automatically vegan. Some of our bars contain honey, for example, so the individual product information should always be checked.
At Highland Soap Co, our 190g handmade soaps are made using the cold-process method. Our separate 150g organic soap range is made using a melt-and-pour glycerine process. Both are made by hand in the Highlands, but the recipes, production methods and finished bars are different.
Compare our handmade and organic soaps
How to read a soap ingredients list
Soap ingredients can look more complicated on a label than they did when they entered the mixing vessel.
Cosmetic ingredient lists use standardised names, commonly known as INCI names. This lets the same ingredient be identified consistently across different products and countries. UK guidance requires cosmetic products to carry an ingredient list and supports the use of the internationally recognised INCI system.
After oils have been made into soap, their names may appear differently. For example:
- Sodium olivate is the soap made from olive oil
- Sodium cocoate is the soap made from coconut oil
- Sodium castorate is the soap made from castor oil
- Aqua means water
- Butyrospermum parkii butter means shea butter
- Theobroma cacao seed butter means cocoa butter
These names may sound technical, but that does not automatically make them undesirable or synthetic. They are standard ways of identifying ingredients.
Fragrance may appear as parfum, while essential oils and certain fragrance allergens may also be listed individually. The full ingredient list is the best place to check for anything you already know you wish to avoid.
What to look for on the label
When comparing soap bars, check:
- What provides the cleansing action
- Which oils and butters are included
- Whether the bar contains fragrance or essential oils
- Any allergens you already know you react to
- Whether animal-derived ingredients such as honey are present
- The weight of the bar
- How the product is packaged
- Whether the brand explains where and how it is made
A short ingredient list is not automatically better, and a long one is not automatically worse. The purpose of each ingredient matters more than the number of words on the pack.
Is handmade soap better for your skin?
There is no single soap that will suit everyone.
The production method is only one factor. The finished formula, fragrance, essential oils, cleansing ingredients and the way the product is used all matter. Your own skin and any known sensitivities matter too.
A handmade bar gives the maker close control over the recipe, but the word “handmade” alone does not prove that a product will be suitable for dry, sensitive or allergy-prone skin.
Check the ingredients of the individual bar rather than relying on broad claims such as “natural” or “gentle”. If you have a diagnosed skin condition or a known allergy, follow the advice of a qualified healthcare professional.
Why does handmade soap usually cost more?
Small-batch soapmaking involves more hands-on work than high-volume production.
The oils have to be measured and mixed, the soap poured and cooled, the block cut and the individual bars left to cure before being checked, wrapped and packed. Smaller producers also have fewer economies of scale when buying ingredients, producing packaging and distributing their products.
That does not mean price alone is a sign of quality. It is worth comparing:
- The weight of the bar
- The full ingredient list
- The production method
- How long the bar lasts in use
- Packaging and provenance
- The amount of information provided by the maker
Our handmade soap bars weigh 190g, so bar size should be taken into account when comparing prices with other products.
Does handmade soap last longer?
How long any soap lasts depends heavily on how it is stored.
A bar that sits in water or remains wet between uses will soften and disappear much faster. Letting it drain and dry properly can make a considerable difference.
Use a soap dish with slats, ridges or drainage holes, keep the bar away from the direct stream of a shower or tap and give it time to dry between washes. Rotating between two bars can also help when a soap is used frequently by several people.
Read our guide to making a soap bar last longer
How to choose the right handmade soap
Start with the full ingredients rather than the colour of the bar or the claims on the front.
Choose your scent
Citrus, herbal and mint scents tend to feel fresh and lively. Lavender, rose and other floral scents are softer, while whisky, honey, vanilla and spice notes have a warmer character.
Consider texture
Some bars are smooth, while others contain exfoliating ingredients. Our Gardener’s Remedy soap, for example, contains pumice and is intended for hands that have been busy outdoors.
Check for fragrance and allergens
Essential oils are natural ingredients, but they still contain fragrance compounds. Choose carefully if you already know that particular fragrances or essential oils do not suit you.
Check whether the bar is vegan
Many of our products are suitable for vegans, but a few contain honey. The ingredients on each product page provide the most reliable answer.
Think about where you will use it
A bar kept beside a sink may need to stand up to frequent handwashing. A bath or shower bar may be chosen for its scent, texture and lather. In either case, good drainage will help it last.
Common questions about handmade soap
Does handmade soap contain lye?
Sodium hydroxide, often called lye, is used to make traditional solid soap. It reacts with the oils during saponification. In a properly formulated finished bar, the lye has reacted rather than remaining as free caustic sodium hydroxide.
What is cold-process soap?
Cold-process soap is made by mixing oils with a sodium hydroxide solution without using an external high-temperature cooking stage. The mixture warms through its own chemical reaction, then sets and is left to cure before use.
Is cold-pressed soap the same as cold-process soap?
No. “Cold-process” is the usual term for this method of soapmaking.
“Cold-pressed” normally describes a method used to extract oils from seeds, nuts or fruits. A cold-process soap may contain cold-pressed oils, but the terms do not mean the same thing.
Is handmade soap always natural?
No. Handmade describes the production method, not every ingredient in the bar. Handmade soaps can contain essential oils, fragrance, colourants or other ingredients depending on the recipe.
Is handmade soap always organic?
No. A product can be handmade without using certified organic ingredients. Check which ingredients are described as organic and what evidence supports the claim.
Is handmade soap better than supermarket soap?
Not automatically. Supermarket bars vary widely, as do handmade soaps. Compare the cleansing system, full ingredients, fragrance, allergens, bar size, packaging and information provided by the manufacturer.
Does handmade soap contain glycerine?
Glycerine is formed naturally during traditional soapmaking. Whether additional glycerine is included, or how the finished product is formulated, depends on the individual recipe and method.
Why does soap need to cure?
Freshly cut cold-process soap still contains water. Curing gives the bar time to lose some of that water and become firmer before use. The exact curing period depends on the recipe and production process.
Is handmade soap suitable for sensitive skin?
The word “handmade” cannot answer that by itself. Check the full ingredients, particularly fragrance, essential oils and any known allergens. Seek professional advice where you have a diagnosed skin condition or a history of reactions.
The useful difference is knowing what you are buying
Handmade soap offers a closer connection between the finished bar, the ingredients and the people who made it. At our Highland workshop, every batch is mixed, cut, cured and prepared on a small scale.
That process matters to us, but it is not the only reason to choose a soap. Read the ingredients, choose a scent you will enjoy and think about how and where you will use the bar.
A good soap should be clearly labelled, honestly described and pleasant to use, whether it was made in a 25kg block or on a much larger production line.