Pears soap is a mild, glycerin-based bar that cleans without stripping skin as harshly as many traditional soaps. It has a loyal following for good reason: its transparent formula contains several humectants that help retain moisture, and many users with oily or acne-prone skin report good results. But “good” depends on your skin type and what you’re comparing it to. The formula also contains a few ingredients that can irritate sensitive skin, and its pH sits well above what dermatologists consider ideal.
What’s Actually in Pears Soap
The formula is built on a base of palm-derived cleansing agents (sodium palmate and sodium palm kernelate) along with sodium stearate, which are standard soap ingredients. What sets Pears apart from a basic bar soap is its humectant load. It contains four moisture-attracting ingredients: glycerin, sorbitol, propylene glycol, and a compound called PEG-4. Glycerin in particular is one of the most well-studied skin hydrators, and its presence is why Pears feels less drying than a typical drugstore soap.
The formula also includes sodium rosinate, a pine resin derivative that acts as a cleanser and gives the bar part of its amber color and firmness. It’s worth noting because it can cause skin sensitization in some people, something Pears’ own packaging now acknowledges.
The SLS Question
Pears contains sodium lauryl sulfate (SLS), a surfactant that’s effective at removing oil and dirt but is classified as a primary irritant. That means it can irritate skin in a single exposure without any prior sensitivity. SLS is what produces the rich, creamy lather many people associate with a good soap, but it’s also the reason dermatologists often steer people with eczema, rosacea, or very dry skin toward SLS-free cleansers. In a rinse-off product like a bar soap, the contact time is short, which limits the irritation for most people. Still, if your skin reacts to foaming face washes, SLS is likely the culprit.
Fragrance and Allergen Concerns
The signature Pears scent comes at a cost for sensitive skin. The formula contains generic “parfum” (fragrance), which is the single most common cause of contact allergy to cosmetics. Beyond that, the label lists five individually declared fragrance allergens that the EU requires to be called out separately: benzyl benzoate, benzyl salicylate, eugenol, limonene, and linalool.
Limonene and linalool are especially worth knowing about. Both oxidize when exposed to air over time, meaning an older bar that’s been sitting open on your shower shelf for months is more likely to trigger a reaction than a fresh one. If you’ve used Pears without problems, this probably won’t affect you. But if you notice redness or itching developing after switching to a new bar or using one that’s been sitting around, the fragrance components are a reasonable suspect.
pH Level: Higher Than Ideal
Healthy skin maintains an acidic surface (called the acid mantle) with a pH around 4.5 to 5.5. This slightly acidic environment supports the skin’s barrier function and keeps its microbiome in check. Pears soap tests at a pH of 9 to 10.5, which is alkaline. That’s typical for bar soaps in general, not a Pears-specific problem, but it’s worth understanding.
Washing with an alkaline cleanser temporarily raises your skin’s pH, which can weaken the barrier and leave skin feeling tight. For most people, the skin rebounds to its normal pH within an hour or two. For people with compromised barriers, dry skin conditions, or eczema, that temporary disruption can compound over time. If maintaining your skin’s pH balance is a priority, a syndet (synthetic detergent) bar or a liquid cleanser formulated at pH 5 to 6 will outperform any traditional soap, Pears included.
How the Formula Has Changed
If you remember Pears from years ago and feel like it’s different now, you’re not imagining it. The formula was reformulated in 2009 to a version called “Gentle Care,” which made the bar softer, gave it a stronger scent, and shortened its lifespan in the shower. More significantly, the reformulation dropped the “hypoallergenic, non-comedogenic” claim from the packaging. By 2014, the “dermatologist tested” label was also removed, and new warnings were added about sodium rosinate’s potential to cause skin sensitization. The bar now carries a note advising against use on inflamed or broken skin.
None of this means the soap is unsafe. It does mean the manufacturer is no longer positioning it as a sensitive-skin product the way it once did.
How It Performs for Oily and Acne-Prone Skin
Pears has a strong track record among people with oily and acne-prone skin, based on user reviews. Many report that it removes oil and makeup effectively without the extreme dryness that comes with harsher bars. One consistent theme in user feedback is the comparison to other popular options: people who found Neutrogena, Dove, or liquid castile soap too drying or reddening often describe Pears as a better fit that leaves skin smooth rather than tight.
There’s no published comedogenicity rating for the soap as a whole, and ingredient-level comedogenicity scores are unreliable for finished products since the final formulation matters more than any single ingredient. What user experience suggests is that the glycerin-rich, transparent formula rinses cleanly and doesn’t leave a heavy residue, which is generally favorable for pore health. If you’re dealing with active acne, a soap alone won’t treat it, but Pears is unlikely to make things worse for most people.
Who It Works Best For
Pears is a reasonable everyday soap for people with normal to oily skin who aren’t sensitive to fragrance. Its glycerin and sorbitol content give it a genuine moisture advantage over basic bar soaps, and its transparent formula rinses without leaving a filmy residue. It’s affordable and widely available, which matters for a product you use daily.
It’s less ideal for people with dry skin, eczema, rosacea, or known fragrance sensitivities. The combination of SLS, alkaline pH, and multiple fragrance allergens makes it a poor match for compromised or reactive skin. If you fall into that category, a fragrance-free, pH-balanced cleanser will serve you better. For everyone else, Pears does what it promises: a gentle-for-a-soap clean that doesn’t leave your face feeling like parchment.