HARP skin science · The label-reading guide
Different names.
The same soap chemistry.
Goat’s milk. Olive oil. “All natural.” Those words tell part of the story. The cleansing base tells you what is actually washing your skin.
01 · Start with the base
Soap starts with oils or fats + lye.
That reaction is called saponification. It creates soap: sodium or potassium salts of fatty acids. On a label, these may appear as “saponified oils,” “sodium palmate” or “sodium cocoate.” [1]
The lye can be gone. The high pH can remain.
In properly made soap, the lye is used up. But reacting oils with lye creates soap salts that are naturally alkaline in water. No leftover lye does not mean a low-pH bar.
02 · Why your skin notices
Clean shouldn’t mean dry, tight skin.
Skin’s surface is naturally mildly acidic. High-pH soap can raise that surface pH, and harsh cleansing can disrupt the skin barrier, increase moisture loss and leave skin dry, tight or irritated. That stripped feeling is not the price you have to pay for getting clean. [2]
Traditional soap
Alkaline by nature
Typically pH 9–11A saponified oil or fat base. Adding milk or botanicals does not automatically make it soap-free or acidic. [3]
HARP body wash bars
Soap-free by design
pH 5.0–6.0An SCI-based cleansing system formulated closer to skin’s naturally acidic surface—not traditional soap with a different name.
Cheaper to make doesn’t mean better for your skin.
Traditional soap is often an inexpensive cleansing base. Widely available ingredients and established production methods make it an economical, straightforward choice for manufacturers. But low production cost does not tell you how a cleanser will treat your skin. HARP chooses a different cleansing chemistry. [6]
03 · Turn the bar over
Six brands. Look for the soap base.
The highlighted ingredients identify soap—or the oils and lye used to make it. Read the base, not just the front of the box.
Selected ingredient excerpts · checked September 26, 2026 · brand sources linked below.
Beekman 1802
Pure Fragrance Free Goat Milk Soap
What it means: Palm- and coconut/palm-kernel-derived soap, plus goat milk and non-soap cleansers. It is a soap-containing blend. Goat milk does not erase the soap base.
Brand photo & ingredient source ↗
Dr. Squatch
Pine Tar Bar Soap
What it means: “Saponified” means those oils were reacted with alkali to become soap. Pine tar and the other additions do not change that cleansing base.
Brand photo & ingredient source ↗
Dr. Bronner’s
Unscented Pure-Castile Magic Bar Soap
What it means: Oils and lye used to make soap. The brand explains that the lye is consumed during saponification; that does not make the resulting bar pH-neutral.
Brand photo & ingredient source ↗
Kirk’s
Original Fresh Scent Castile Bar Soap
What it means: Sodium cocoate is coconut-derived soap. It is not sodium cocoyl isethionate (SCI)—similar-sounding names, different cleansing chemistry.
Brand photo & ingredient source ↗
Chagrin Valley Soap & Salve
Castile & Cocoa
What it means: Natural oils turned into soap by saponification. The lye is used up, but “all natural” does not mean low-pH.
Brand photo & ingredient source ↗
The Grandpa Soap Company
Pine Tar Bar Soap
What it means: Palm-, coconut- and/or palm-kernel-derived soap. Pine tar is an added ingredient; the cleansing base is still soap.
Brand photo & ingredient source ↗04 · Your label-reading cheat sheet
Soap goes by more than one name.
| What you may see | What it means |
|---|---|
| Saponified oils / fats | Oils or fats reacted with alkali to make soap. |
| Sodium / potassium palmate | Palm-oil-derived soap. |
| Sodium / potassium cocoate | Coconut-oil-derived soap. |
| Sodium / potassium palm kernelate | Palm-kernel-oil-derived soap. |
| Sodium / potassium olivate | Olive-oil-derived soap. |
| Sodium / potassium tallowate | Soap derived from animal fat. |
| Sodium stearate, palmitate, laurate or oleate | Soaps named for individual fatty acids, not the original oil. |
More soap names
Potassium stearate, potassium palmitate, potassium laurate, potassium oleate, sodium myristate, potassium myristate, sodium ricinoleate, sodium castorate, potassium castorate, sodium sheabutterate, potassium sheabutterate, sodium sunflowerseedate and potassium sunflowerseedate. [5]
Castorate refers to castor-derived soap; ricinoleate is a salt of a major castor-oil fatty acid. Sheabutterate and sunflowerseedate refer to shea- and sunflower-derived soaps.
What if the label lists oils and lye instead?
Some makers list starting ingredients—oils plus sodium or potassium hydroxide—instead of finished soap names. Check the maker’s explanation: hydroxides can also adjust pH in non-soap cosmetics, so either name alone does not prove a product is soap.
Similar names. Different ingredients.
Sodium cocoate = soap.
Sodium cocoyl isethionate (SCI) = a non-soap cleanser.
Likewise, stearic acid is a fatty acid—not sodium stearate. A long ingredient name does not automatically mean a harsh cleanser.
05 · A different kind of bar
How SCI is made—and why it matters.
SCI stands for sodium cocoyl isethionate. It is the primary cleanser in HARP’s soap-free syndet system. “Syndet” simply means a synthetic detergent cleanser, rather than traditional soap.
- Start with coconut-derived fatty acids. These are building blocks obtained from coconut oil—not saponified soap.
- Combine them with sodium isethionate. This is a water-loving salt used to make cleansing ingredients. It provides the part of the finished cleanser that interacts with water.
- Use controlled heat to form SCI. The ingredients react to create a new cleanser with an oil-attracting part and a water-attracting part. Together, these help loosen oily buildup and dirt so water can carry them away. The SCI can then be formed into flakes or granules for use in cleansing bars. [7, 8]
Different chemistry. A gentler direction.
The result is a mild, soap-free cleansing ingredient known for rich, creamy lather. Unlike making traditional alkaline soap, this process creates a cleanser that can be formulated at a mildly acidic pH. [9]
HARP combines that cleansing system with moisturizing ingredients at pH 5.0–6.0. The goal: an effective, comfortable cleanse—not dry, tight skin and a stripped after-feel.
Is pH the only thing that matters?
No—the whole formula and your skin matter too. But if washing regularly leaves your skin dry and tight, a well-formulated, soap-free cleanser is a sensible place to start. [4]
Change the cleanser. Not just the story.
Ready to leave traditional soap behind?
Explore HARP’s soap-free body wash bars.
Shop HARP barsExplore Fragrance-Free
