If your skin feels tight or dry after a shower, the instinct is to reach for a moisturiser. The assumption is that dry skin after showering is just something that happens. We tend to blame the water, our skin type, or the weather, but the culprit is probably our cleansers.

How most commercial soaps work

Soap, at its most basic, is the result of a chemical reaction between oils and an alkali (usually sodium hydroxide, commonly known as lye). This reaction is called saponification. The oils and the lye react together, and the result is soap plus glycerin — a natural moisturiser your skin genuinely benefits from.

In commercial soap manufacturing, however, the process is designed for speed and cost efficiency. The formulation is calculated so that virtually all of the oil reacts with the lye, leaving no excess oil in the finished bar. In many cases, manufacturers go a step further — they extract the glycerin produced during saponification and sell it separately to the cosmetics industry, because glycerin on its own is a valuable commodity.

What you're left with is a bar that cleans effectively but gives nothing back to your skin. It strips oil and removes glycerin, leaving your skin's moisture barrier weaker than before you stepped into the shower. That tightness you feel when you towel off isn't "clean." It's your skin telling you something has been taken away.

Many commercial bars go even further by replacing traditional saponified oils entirely with synthetic surfactants — detergent compounds like sodium lauryl sulfate that are harsher cleansing agents than saponified plant oils. These aren't technically soap at all, which is why you'll notice some major brands label their products "beauty bar" or "cleansing bar" rather than "soap." The labelling distinction exists because the product isn't legally soap. It's a detergent in soap's clothing.

What superfatting is and does

Superfatting is a deliberate formulation choice where a soap maker adds more oil to the recipe than the lye can react with. The lye converts most of the oil into soap through saponification, but a calculated percentage of oil remains in the bar unconverted, to sit on your skin and do what plant oils do naturally: moisturise, nourish, and protect.

The term sounds technical, but the concept is simple. If a bar is superfatted at 5%, that means 5% of the oils in the formula didn't become soap. They stayed as oils, and they remain in the finished bar as a built-in moisturising layer.

This is why a superfatted cold process soap feels fundamentally different from a commercial bar. You step out of the shower, and your skin doesn't feel stripped. It feels nourished, soft to the touch, and genuinely moisturised without needing to do anything extra.

Why most soaps aren't superfatted

Cost and speed.

Superfatting requires more oil per bar. Oil is the most expensive raw material in soap making. A higher superfat percentage means a more expensive product to manufacture. For a company producing millions of bars at the lowest possible unit cost, adding 5% more oil than necessary is a cost they won't absorb.

There's also a production speed factor. Superfatted soap works best in cold process manufacturing, where the saponification reaction happens slowly over weeks rather than being forced through in hours with heat. Cold process soap needs to cure - typically four to six weeks - before it's ready to use. During that time, the saponification completes gradually, the bar hardens, the pH stabilises, and the excess oils settle into the bar's structure.

Commercial soap is manufactured using hot process or continuous process methods that produce a finished bar in a matter of hours. These methods are optimised for volume and consistency, not for leaving beneficial oils intact in the final product. The economic logic is clear: why leave expensive oil unreacted in the bar when you can convert all of it into sellable soap and extract the glycerin to sell separately?

The consumer pays for this logic twice - once at the soap till, and again when they need a moisturiser to fix what their soap did to their skin.

Is glycerin actually important?

Glycerin is a humectant; it draws moisture from the air and holds it against your skin. It's produced naturally during saponification. In a cold process superfatted soap, the glycerin stays in the bar. Every time you use it, you're getting the benefit of a natural moisturiser that the soap itself created.

In commercial manufacturing, glycerin is a profitable by-product. It's extracted, purified, and sold to companies that make lotions, creams, and pharmaceutical products. The soap loses its glycerin. Then those same companies sell you a moisturiser - often containing the very glycerin that was stripped from a soap bar in the first place.

There's nothing illegal about this. It's simply how the economics of industrial soap manufacturing work. But it does mean that the "shower then moisturise" routine that most people think is necessary might be compensating for a problem that a better soap wouldn't create.

How to tell if a soap is superfatted

There's no single label that guarantees it, but there are reliable indicators.

Cold process. If a soap is made using the cold process method, there's a good chance it's superfatted, because cold process is the method that makes superfatting most effective. Look for "cold process" on the packaging or product description.

Short ingredient list with recognisable oils. A superfatted soap will list plant oils and butters prominently - coconut oil, olive oil, avocado oil, shea butter, mango butter. If the ingredient list is dominated by names you recognise as actual foods or plants, the bar was likely made from real oils with some left unreacted.

Price. This one is uncomfortable but honest. A superfatted cold process soap costs more to make than a commercial bar. If a soap is priced at ₹30–50, it almost certainly isn't superfatted, because the oil cost alone would exceed that price point. A higher price doesn't guarantee quality, but a very low price usually rules out superfatting.

How it feels. Ultimately, the most reliable test is your own skin. If you step out of the shower and your skin feels soft and moisturised without applying anything, the soap is doing more than just cleaning. If your skin feels tight and dry, the soap is only cleaning — and taking something with it on the way out.

Where Mr Macha stands on this

Every Mr Macha soap is cold processed and superfatted at 5%. The glycerin produced during saponification stays in the bar. The excess oils - whichever carrier oils are in that specific formulation - remain unreacted and present in the finished product. Each bar cures for a minimum of six weeks before it ships. The result is a soap that cleans without stripping and leaves behind some moisture for your skin to feed on. 

The Macha Manual is where we break down what goes into skincare — the ingredients, the processes, and the questions worth asking. No jargon for its own sake. Just the stuff that actually matters for your skin.