Pilates Self-Care Saturday: What's Really Inside Your Bar of Soap?

Hand reaching for a foaming bar of soap on a wet shower tray.

Most of us pick up a bar of soap without thinking very much about it. We smell it, perhaps admire the packaging, and if it says things like "fresh", "clean", "natural", or "moisturising", we assume we are making a healthy choice. Then you turn the bar over and discover a list of ingredients that looks less like something for your skin and more like the password to a government database.

Traditional soap was surprisingly simple. It was made by combining fats or oils with an alkaline substance. This process, called saponification, creates soap and glycerine. Thousands of years ago people used olive oil, animal fats and plant oils. The purpose was simple. Remove dirt and oil from the skin.

Many modern bars sold today are not quite that simple anymore. In fact, many bars sold today are technically closer to detergent bars than traditional soaps. To improve shelf life, create more foam, add stronger fragrance, produce a perfectly smooth appearance and keep manufacturing costs down, additional ingredients are often added.

You may see ingredients such as:

• Sodium Lauryl Sulphate (SLS) or Sodium Laureth Sulphate (SLES)

• Artificial fragrances listed simply as "fragrance" or "parfum"

• Synthetic colourings

• Preservatives

• Antibacterial agents

• Stabilising agents and foaming boosters

None of these automatically mean danger. Soap ingredients are tested for safety within approved levels. But "approved" and "ideal for your skin" are not always identical things.

One of the biggest issues can be surfactants such as SLS. These ingredients are very good at removing oil. That is exactly what they are designed to do. The problem is that your skin actually needs some of those natural oils. They help form your protective skin barrier. Strip too much away and your skin may become dry, itchy, irritated or more sensitive over time.

Fragrance can be another hidden issue. The word "fragrance" on a label can represent a mixture of multiple undisclosed ingredients. Some people have no issue at all, while others can develop skin reactions after repeated exposure.

Interestingly, the thing many people associate with cleanliness is often the biggest illusion. Foam. More bubbles do not necessarily mean cleaner skin. Humans seem deeply attached to the idea that if something is not creating enough foam then it is not working. Somewhere along the way we decided we needed our shower to resemble a small weather system.

Foam is largely about experience rather than cleaning power.

There is also the issue of over-cleaning. Skin naturally sits at a slightly acidic pH and carries a healthy protective layer of oils and microbes. Constantly washing with strong cleansers may disturb this balance. Sometimes gentler cleansing can be more beneficial than aggressively scrubbing the entire body every day.

So what should we actually look for when buying a bar of soap?

Look for shorter ingredient lists where possible.

Look for oils such as:

• Olive oil

• Coconut oil

• Shea butter

• Cocoa butter

• Castor oil

Look for:

• Fragrance-free if you have sensitive skin

• Sulphate-free if dryness is a problem

• Minimal colouring additives

• Added glycerine, which helps maintain moisture

• Products labelled for sensitive skin

Be cautious with:

• Heavy perfumes

• Strong antibacterial claims for daily use

• Long ingredient lists filled with unfamiliar additives

• Very strong deodorising products

Natural does not automatically mean perfect either. Essential oils can also irritate some people. Poison ivy is natural too, and nobody is rubbing that over themselves voluntarily.

Pilates teaches us to pay attention to what we put into our bodies through movement, breathing and lifestyle. Perhaps self-care also means paying attention to what we put onto our bodies. Your skin is not simply wrapping paper holding everything together. It is an organ, and a very intelligent one.

Perhaps next time you pick up a bar of soap, turn it over and have a look. You may discover you are buying a cleansing product, or you may discover you are holding a tiny scented chemistry set.