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BOST Fragrance-Free Shampoo Investigation Simple Shampoo Gentle Care: Is It Really Fragrance Free?
Case File – Fragrance-Free Shampoo Investigation No 1

Simple Shampoo Gentle Care: Is It Really Fragrance Free?

You reached for Simple because the bottle said fragrance-free, and the bottle felt like a promise you could trust. The ingredient list tells a different story. Chamomile and geranium oils contradict the front label, and in a hot shower you can smell them.

Tested in hard water (South Downs UK). Single-blind. No conditioner used in shower test.

Simple Gentle Care Shampoo

Fig. II Exhibit A. 200ml bottle. Is it as Simple as promised?

Overall verdict
Flagged
Contains sulfates · CAPB present
Simple Gentle Care Shampoo Sensory Review 200ml
£4.99  ·  2.5p per 100ml

Sensory scorecard

Smell and texture: the findings

This review examines two dimensions: smell and texture & behaviour.

Smell characteristics
Caution
Strength Faint when cold; light citrusy-floral note in heat. Present but slightly pleasant
Caution
Character Slightly citrusy or grass-like cold; faintly chamomile-floral in heat, consistent with the essential oils listed
Cleared
Lingering Nothing detectable on hair after drying
What this means in practice

The smell is faint, a light citrusy or grass-like note cold, a faint chamomile-floral character in heat, consistent with the essential oils listed in the INCI. Nothing lingered after rinsing. The fragrance-free claim on the label does not hold. Fragrance-active essential oils are present and detectable. For users who react to chamomile or geranium oils, or who require a product genuinely free of all fragrance-active ingredients regardless of source, this does not qualify. <a href="https://boxofsmallthings.com/faith-in-nature-natural-shampoo-fragrance-free-sensory-review/">Faith In Nature</a> is the clearest alternative.

Texture & behaviour characteristics
Caution
Gel on dispense Medium-thick clear gel which is slightly gooey and sticky; leaves residue on cap
Caution
Foam & suds Non-lathering and spreads as a sticky coating rather than working into foam – ok for suds-adverse
Flagged
Squeak on rinse Very pronounced squeak which was described as styrofoam-like; amongst the squeakiest clean feeling in the batch
Caution
Residue No visible residue post-rinse; next-day scalp itching noted, suggesting some residual activity
Caution
Packaging Comfortable hand size; slight cap squeak; product accumulates on cap from first use; two-hand operation to close
What this means in practice

The shampoo texture is the most difficult aspect of this product in use. The gel is sticky and did not spread easily. A normal quantity covered only the top of the head. A double dose was consistently required, and spreadability remained poor. The squeaky feeling under hands after rinsing was intense like styrofoam: not merely clean-feeling but a specific quality of friction that constitutes its own category of sensory difficulty. The cap also has a triggering squeak and collects product residue from the first use. The fast rinse time is one aspect which is worth recommending.

Case notes

What was found

Simple is a drugstore staple and is widely available. The brand has built its reputation on a sensitive-skin positioning consistent, claiming no unnecessary ingredients, no harsh chemicals, and designed for reactive skin. Simple’s label has claims which are not fully supported.

The ingredient list was examined after the shower, the experience having failed to match the packaging. The front of the bottle reads fragrance-free. Chamomile Oil and Geranium Oil appear in the ingredients list. The brand’s “no artificial perfume” framing is technically accurate because both oils are naturally derived. The front reads sulfate-free however Sodium Laureth Sulfate is the first listed surfactant.

The bottle says sulfate-free on the front. It isn’t. Sodium Laureth Sulfate sits in the ingredient list, and whether you spell it sulfate or sulphate the answer is the same: this is an SLES-based cleanser marketed as though it weren’t. The claim isn’t a lie about what’s inside, because the ingredients are printed accurately on the back. It’s a front-of-pack claim that contradicts them, and for anyone avoiding sulphates on a reactive scalp that distinction matters more than the chemistry does.

In practice, the smell was faint; detectable in the shower but not aggressive. A light citrusy chamomile note, consistent with the oils listed. The more significant findings were texture and cleansing behaviour. The non-lathering formula does not spread through hair. it remains where placed, requiring a double dose to cover the scalp. The rinse was the fastest in the batch. The post-rinse squeak was the styrofoam variety, a specific quality of friction that registers as its own category of sensory difficulty rather than merely an indication of cleanliness. Next-day scalp itching was also recorded.

SLES is the lead surfactant, which does not seem to be in line with the “gentle” branding. CAPB is also present. The pH of 6 is scalp-friendly on paper; the surfactant combination overrides that in practice. For a genuinely fragrance-free formula with a comfortable clean, Faith In Nature is a better alternative. For non-lathering shampoo, if you are avoiding foam, without the squeaky clean, Vanicream uses a glucoside system that also produces minimal foam see the low-foam guide for how both compare. The full batch comparison shows how Simple sits among the others.

What was tested

The tests

Packaging and product examination Before the shower

200ml comfortably hand-sized, slightly grippy plastic. The cap has a pleasing snap but a slight squeak on both opening and closing. Closing requires both hands and a little force. Product residue appeared on the cap from the first use.

close up of simple cap
Gel characteristics On first dispense

Leaves residue on the cap from the first use.

Medium-thick, slightly gooey gel but crystal clear.

Cold smell test Before water is involved

A faint, slightly unusual smell: citrusy, grass-like, mild. Present, but easy to overlook at this stage. Consistent with the essential oils listed in the INCI: Chamomile Oil and Geranium Oil.

Jar test Foam under controlled conditions

A fixed amount was added to a jar of warm water, shaken fifteen times. The product dispersed as a coating on the water rather than forming suds. No meaningful foam result.

pH test Litmus paper
6
pH measured March 2026 Approximately 6, slightly acidic, within the scalp-friendly range. The pH did not prevent the aggressive clean observed in the shower stage; the SLES surfactant system dominates over the pH reading.
Hand lather test Texture and behaviour

Product applied to wet hands. It was slightly stringy and sticky. Shampoo became slippery without forming lather, spreading as a coating rather than foaming. An unusual texture that some users will find actively unpleasant. Rinsed from hands at normal speed.

In-shower test Hot water, hard water

A double dose was needed because without lathering, the product clings to where it is placed on the top of the head rather than distributing through the hair. A faint essential-oil note was detectable in steam although tolerable and not unpleasant. The rinse was the fastest in the test batch: a genuine positive. Post-rinse squeak under hands was very pronounced. For some users, that specific friction and sound combination is very difficult. No scalp discomfort noted during washing itself.

After drying: hair was left smooth and soft immediately which was a pleasant surprise. Later that day and the following morning, some scalp itching developed. No lingering smell. The fast rinse and immediate soft feel are the two arguments for this product. The squeak and the itching are the two arguments against a recommendation here.

Claims checker

What the label says vs. what the test found

The claimFindingNote
"Unscented / fragrance-free"FlaggedContains Chamomile Oil and Geranium Oil: both fragrance-active essential oils, detectable in hot water and shower use. This claim fails testing.
"Sulfate-free"FlaggedContains Sodium Laureth Sulfate (SLES) as the primary surfactant. This claim fails testing.
"No harsh chemicals that can upset your scalp"CautionContains SLES and CAPB, both of which can irritate sensitive scalps. Next-day itching was observed. The claim is subjective; the performance in testing does not fully support it.
"No artificial perfume"ClearedTechnically accurate: the scent sources are naturally-derived essential oils rather than synthetic fragrance compounds. This is a real distinction, but a narrow one for users who react to fragrance regardless of origin.
"Gentle cleaning shampoo"CautionThe cleaning action was more aggressive than "gentle" implies: pronounced squeak and next-day itching suggest overcleaning for this scalp type. The fast rinse is a positive. "Gentle" is not supported by the overall experience.
"1 vitamin & 2 hair-loving ingredients"ClearedPro-Vitamin B5, Chamomile Oil, and Glycerin are present in the ingredient list. The claim is accurate.

Ingredient analysis

Key points

  • Key sensory points (not a full INCI breakdown)
  • Sodium Laureth Sulfate (SLES): Primary cleanser, first listed, indicating highest concentration. A sulfate; milder than SLS but still a firm cleanser. Present despite the sulfate-free claim on the front of the bottle.
  • Cocamidopropyl Betaine (CAPB): Foam booster. A documented contact allergen for some users with sensitive skin, present and worth noting for a product positioned at sensitive scalps.
  • Cocamide DEA: Foam booster. Present despite the product producing almost no visible lather in testing, its effect here appears minimal.
  • Sodium Chloride: Thickens the formula; may contribute to dryness with repeated use.
  • Panthenol (Pro-Vitamin B5): Humectant. Supports moisture retention and surface smoothness.
  • Glycerin: Humectant. Aids moisture retention.
  • Chamomile Oil (Anthemis Nobilis): Fragrance-active essential oil. Contributes the faint citrusy-floral smell detected in testing. A naturally-derived fragrance ingredient, not a synthetic compound, but still a fragrance-active ingredient that undermines the fragrance-free claim.
  • Geranium Oil: Fragrance-active essential oil. Co-contributor to the detected scent. A naturally-derived fragrance ingredient with the same issue.
  • Citric Acid: pH adjuster. Formula measured at approximately pH 6, a scalp-friendly range. The pleasant pH did not prevent the aggressive clean, suggesting the surfactant system is the primary driver of cleansing behaviour.

Verdict

Who this suits and who it doesn’t

Cleared Works well if avoiding
  • Fastest rinse in the test batch genuinely quick and clean
  • Hair feels smooth and soft immediately after washing
  • Non-lathering – a real positive for users with strong suds aversion
  • Faint smell overall – the essential oils are present but not aggressive
Caution Not right if you need
  • Marketed as fragrance-free – contains Chamomile Oil and Geranium Oil; this claim fails testing
  • Marketed as sulfate-free – contains Sodium Laureth Sulfate; this claim also fails testing
  • Very pronounced squeaky feeling clean which is problematic if you have an aversion to this sensation
  • Sticky, non-lathering texture that doesn't spread – double dose required consistently
  • Next-day scalp itching observed after use
  • Cap squeaks; product builds up from the first use
  • Small 200ml bottle at a double dose will not last long

The front of the bottle reads: fragrance-free and sulfate-free. The ingredient list contains Chamomile Oil, Geranium Oil, and Sodium Laureth Sulfate.

Simple is a brand with long-standing sensitive-skin credentials. The “no artificial perfume” framing on the label is technically accurate – the scent sources are naturally-derived essential oils rather than synthetic fragrance compounds. Whether this distinction comforts users who react to fragrance regardless of origin is another matter.

In practice: the smell was faint and a light citrusy note – tolerable for most, but present and attributable to listed ingredients. The texture is sticky and non-spreading; a double dose was required and coverage remained uneven. The post-rinse squeak was the styrofoam variety, an intense and often triggering squeak in the hands. Next-day scalp itching was also noted.

The rinse was the fastest in the batch. Hair felt smooth immediately after. For reliably odourless results: Faith In Nature. For non-lathering without the squeak: Vanicream. Smell results across all eight products are on the low-scent hub. For a full sensitivity cross-reference across all eight products, see the ingredient sensitivity guide.

Flagged — fragrance-free and sulfate-free claims fail testing; essential oils present; squeaky clean and next-day itching noted