💧 Serums & Actives

Timeless 20% Vitamin C + E Ferulic Acid Serum: Formula, Ratings and Eleven Years of Price Data

AMAZON US · FACIAL SERUM · SNAPSHOT 31 OCTOBER 2026 · ALL PRICES USD, NO CONVERSION

AMAZON US · FACIAL SERUM · SNAPSHOT 31 OCTOBER 2026 · ALL PRICES USD, NO CONVERSION

A one-fluid-ounce antioxidant serum built on the classic ascorbic acid / tocopherol / ferulic acid triad, sold in the United States since 2010. This dossier reads the listing, the rating record, the ingredient profile and eleven years of price behaviour against each other. Everything below comes from a single capture on 31 October 2026 with the delivery address set to a United States ZIP code.


1. Product information

FieldDetail
BrandTimeless Skin Care
Product20% Vitamin C + E Ferulic Acid Serum, Antioxidant
FormatPump bottle, 1 fl oz / 30 ml / 30 g
Category pathBeauty & Personal Care › Skin Care › Face › Treatments & Masks › Serums
Declared skin typeAll
Declared scentUnscented
Declared benefitBrightening
Headline actives20% vitamin C, vitamin E, ferulic acid
Sales rank at capture#574 in Beauty & Personal Care; #22 in Facial Serums
AvailabilityIn stock
FulfilmentSold by a third-party seller, shipped by Amazon

1.1 What the brand says it does

#Claim as publishedWhat it commits to
1Enriched serum for brightening skin, infused with a megadose of vitamin C to support bright skin and aid healthy skin cell turnoverBrightening plus cell-turnover support
2Advanced formula blending 20% vitamin C and E alongside ferulic acid, formulated to aid an even tone and textureTone and texture evenness; names all three actives and the 20% figure
3Supports a healthy skin defense against environmental pollutantsBarrier and pollution defence
4For dry and oily skin; apply 2–3 pumps onto freshly cleansed skin, dailyUsage dose and frequency
5Cruelty-free, made with zero parabens, fragrances, or dyesThree named absences plus a cruelty position

Claim 5 is the most consequential sentence on the page, because it is the only one a buyer can check against an ingredient list — and it is the claim the review record pushes back on hardest. Section 3.2 resolves it.

Yellow cylindrical pump bottle, front label Ingredient callout infographic Clinical results infographic
Front of pack: yellow pump bottle, white vertical wordmark, three actives listed beside a hairline rule, fill size printed at the base.
Source: Amazon
Ingredient callouts: L-ascorbic acid, ferulic acid and vitamin E each tagged with a function line, against a serum droplet.
Source: Amazon
Clinical panel: 81% improved complexion, 76% less dull skin, 71% brighter and smoother, footnoted to a 21-participant 28-day third-party trial.
Source: Amazon

The listing exposes seven gallery images; the first three in carousel order are shown. No buyer photographs were available on this capture, so no customer imagery appears in this dossier.

1.3 Where it sits in the brand's own range

ProductPriceRatingPrimary benefitTarget concernKey ingredients
This serum, 1 oz$27.954.3 (14,154)Brightening, evens toneDullness, hyperpigmentation20% vitamin C, ferulic acid, vitamin E
Vitamin B5 Serum, 1 oz$24.954.5 (365)Restores barrier, soothesDehydrated, blemish-proneVitamin B5, hyaluronic acid
Hydrating Eye Cream, 0.5 oz$23.954.3 (383)Hydrates, reduces puffinessDehydration, ageing, wrinklesMatrixyl 3000, rose oil, HA
Squalane Oil 100%, 1 oz$12.954.6 (5,755)Minimises moisture loss and oilDryness, blemishesPure squalane
HA Spray Rose, 4 oz$20.954.5 (508)Hydrates, refreshesDehydrated skinMatrixyl 3000, aloe

This is the most expensive item of the five in absolute terms and carries the largest rating base by a factor of four. The brand is merchandising it as the premium entry, and the comparison block confirms it contains no peptides — the peptide story belongs to the eye cream and the spray.


2. Product rating and buyer response

4.3 out of 5, from 14,154 ratings. That is a mature record: enough volume that the aggregate is stable, and old enough that the distribution reflects several packaging generations rather than one.

2.1 Star distribution

The shape is top-heavy but not clean. 82% of ratings sit at four stars or better, yet the one-star bucket at 8% is more than double the two-star bucket at 3%. A small spike at the very bottom with no matching shoulder above it is the signature of a product with one discrete failure mode, not a product that is broadly mediocre — and section 2.2 names that failure mode twice over.

2.2 What the review record actually argues about

Across the eight themes the listing aggregates, three are negative majorities and one is a coin toss:

ThemeMentionsPositiveNegativePositive shareReading
Effectiveness2,4961,91258477%Settled positive
Skin benefits85264420876%Settled positive
Value for money73757416378%Settled positive
Skin colour62332929453%Split — glow versus turning orange
Skin irritation41518822745%Split, leaning negative
Consistency41413827633%Negative majority
Oxidation38310827528%Negative majority
Fragrance58715842927%Weakest theme on the page

The commercial reading is unusually clean: the product's efficacy story is won, and its experience story is not. Buyers agree it brightens and that it is worth the money; they disagree about what it smells like, whether it is a liquid or water, and how fast it turns. Oxidation and fragrance are two different complaints about the same chemistry — a 20% ascorbic acid serum at low pH is intrinsically unstable and intrinsically odorous as it degrades.

2.3 The review summary, in the listing's own words

Customers find the Vitamin C serum effective and appreciate its value for money, noting it evens skin tone and helps with dark spots. The product receives mixed feedback about its consistency, with some describing it as clear liquid while others find it watery, and customers disagree on whether it's suitable for sensitive skin. Moreover, customers report mixed experiences with the product's color, with some saying it makes skin glow while others mention it turning dark orange, and there are concerns about quick oxidation. Additionally, the fragrance receives negative feedback, with several customers describing it as terrible.

The summary and the theme tally agree wherever they overlap, which is the one consistency check available here. Note what the summary does not say: it contains no claim about efficacy decay over time, and no claim about packaging failure, so neither is asserted in this report.

2.4 What could not be collected

Individual review text and buyer photographs did not render on this capture. The page was fetched cold, the delivery context was verified as United States, and three escalating fallbacks were attempted — mobile rendering, a non-US context render, and a retry sequence with a fresh session each time. No review body appeared at any point, and the buyer-photo carousel reported zero image tiles. Consequently this dossier quotes no reviewer, reproduces no buyer language beyond the aggregate summary above, and shows no customer imagery. The rating, the histogram and the theme tally are unaffected.


3. Product ingredients

The formula is short: eleven ingredients. For a serum selling on a 20% active, a list this short is itself the positioning — there is very little room in it for texture modifiers, and almost none for decoration.

3.1 The complete list

#IngredientFunctionComedogenicIrritancyRole in this formula
1WaterSkin conditioning——Base
2EthoxydiglycolHumectant00Solvent; improves spread and penetration
3Ascorbic AcidAntioxidant——The 20% active
4Propylene GlycolHumectant00Humectant and penetration enhancer
5TocopherolAntioxidant0–30–3Vitamin E; second antioxidant
6Polysorbate 80Emulsifying00Solubiliser
7PanthenolSkin conditioning00Soothing humectant
8Ferulic AcidAntimicrobial——Stabilises the two vitamins
9Sodium HyaluronateHumectant00Humectant
10Benzyl AlcoholPerfuming——Preservative; also a fragrance component
11Dehydroacetic AcidPreservative——Second preservative

A dash means the database carries no rating for that ingredient. It does not mean zero risk. A printed range such as 0–3 means sources disagree, and every judgement here uses the upper bound.

3.2 The claim matrix, and the fragrance question

ClaimHoldsBasis
Oil-freeYesNo oil-phase ingredient in the list
Paraben-freeYesPreservation is benzyl alcohol plus dehydroacetic acid
Silicone-freeYesNo silicone in the list
Sulfate-freeYesNo sulfate surfactant in the list
VeganYesAsserted
Cruelty-freeYesBrand-level certification claim, not a formula property
Pore-clogger-freeYesNothing on the tracked trigger list
Reef-safeYesNothing on the tracked restriction list
Fragrance-freeNoOne fragrance-functioning ingredient: benzyl alcohol
Alcohol-freeNoSame single ingredient: benzyl alcohol
EU-allergen-freeNoBenzyl alcohol is a declarable allergen
Fungal-acne-safeNoOne ester flagged: polysorbate 80

Four claims fail, and three of the four point at a single molecule. That is worth stating precisely, because the marketing and the database are both right:

  • No Parfum and no Fragrance appears anywhere in the eleven-row list, and no classic allergen such as limonene or linalool appears either. The brand's "zero fragrances" claim is literally true.
  • Benzyl alcohol is a preservative that also functions as a fragrance component and carries an allergen labelling obligation. That single entry is what fails the fragrance-free, alcohol-free and EU-allergen-free badges at once.
  • So the accurate statement is: no added perfume, one fragrance-functioning preservative. A shopper avoiding fragrance for sensitisation reasons should read that as not fragrance-free in the labelling sense — and it explains why the fragrance theme in section 2.2 runs at only 27% positive despite the "unscented" spec.

The fourth failure is separate and mechanical: polysorbate 80 is an ester, and esters sit on the fungal-acne trigger list regardless of concentration. It is also the formula's only solubiliser, which is what keeps the oil-soluble tocopherol dispersed.

3.3 Ingredient roles, counted

Seven functions across eleven ingredients, and the humectant group is the largest — three of eleven. Note the ordering effect: two humectants (positions 2 and 4) sit ahead of the ascorbic acid at position 3. This is a delivery-oriented formula, in which solvents and penetration enhancers are dosed before the active rather than after it.

3.4 Risk tiers

TierCountIngredientsHow to read it
Rated clear (0 / 0)5Ethoxydiglycol, propylene glycol, polysorbate 80, panthenol, sodium hyaluronateGraded with no comedogenic or irritant signal
Range-rated (0–3)1TocopherolSources disagree; judged at the upper bound of 3
Unrated5Water, ascorbic acid, ferulic acid, benzyl alcohol, dehydroacetic acidNo grade exists — missing data, not a clean bill

The most important number in that table is the one that looks least dramatic: the 20% active has no grade at all. Ascorbic acid is unrated on both the comedogenic and irritant columns, so this table cannot be read as a safety verdict on the ingredient the product is sold on. The sting risk is carried elsewhere — in the three class-level concerns below, which all describe the same chemistry.

3.5 Concerns flagged at ingredient-class level

ConcernWhat it meansWhy it applies here
May worsen eczemaMay increase itching or irritation on eczema-prone skin20% ascorbic acid at low pH
May worsen irritationMay cause stinging, redness or sensitivitySame; strongest on compromised barrier
May worsen rosaceaCan trigger flare-ups in rosacea-prone skinSame; acidity plus penetration enhancers

These are class-level warnings about a formula type, not predictions about any individual. They are also the honest counterweight to a listing that markets the product for "all" skin types: the formula is appropriate for tolerant skin and is a known sting risk for reactive skin. Both of the two humectants ahead of the active — ethoxydiglycol and propylene glycol — are penetration enhancers, which increases rather than reduces that exposure.

3.6 What the formula promises, weighted

BenefitIngredients delivering itWeight
Anti-ageing4Strongest claim in the formula
Hydrating4Strongest claim in the formula
Brightening3Core marketed benefit
Redness reducing3Panthenol plus the two vitamins
Scar healing3Follows from the brightening actives
Barrier repair3Panthenol, tocopherol
Dark spots2The headline commercial claim
Reduces irritation1Single ingredient carries it — weak evidence
Skin texture1Single ingredient carries it — weak evidence

Read the two ends of that table together. The claims the brand actually sells on — brightening and dark spots — are backed by three and two ingredients, which is proportionate in an eleven-ingredient formula. The two claims backed by a single molecule each should be treated as incidental rather than designed.

3.7 Coverage and the missing cross-check

This ingredient analysis rests on one database channel, and that is a real limitation rather than a formatting detail. A second, independent ingredient database that would normally supply its own per-ingredient acne, irritant and safety grades — and a row-count comparison against the official INCI — could not be read on this date. All access paths to it returned a bot-verification page, for the fourth consecutive collection day.

What that costs the analysis: no second grading to corroborate the comedogenic and irritancy columns above, and no independent count to confirm that this eleven-row list matches the current pack. Formula-version drift therefore cannot be ruled out, and the ingredient content should be read as one database's record of one point in time. Nothing was substituted to fill the gap: the table above is not a composite, and no grade in it was inferred.


4. Product price

Price elementValue
Current price$27.95
List priceNot published — no comparison price is shown
Discount or couponNone
Subscribe & save$25.15, a 10% step down
Unit price$27.95 per fluid ounce
DeliveryFree over $35; a paid same-day window is offered

Two structural facts matter more than the number. First, there is no list price, so a shopper sees a single figure with no anchor and no struck-through comparison — there is nothing to discount from, which leaves Subscribe & Save as the only promotional lever on the page. Second, the buy box is held by a third-party seller shipping from Amazon, and the live buy-box figure matches the tracked Amazon-retail figure to the cent (section 4.2). The two channels have converged at $27.95.

4.1 The price record, compared

Price typeLowest everHighest everCurrentAverage
Amazon retail$13.99 (9 Nov 2022)$27.95 (8 Oct 2026)$27.95 (8 Oct 2026)$24.46
Third-party new$3.82 (5 Mar 2023)$69.99 (7 Oct 2014)$27.95 (26 Sep 2026)$24.20
Third-party used$15.24 (22 May 2017)$21.55 (19 May 2017)No current offer$17.35

All figures are all-time values as published by the tracker; none is a period statistic. The current figures are last observations dated 8 October and 26 September 2026, not live quotes.

4.2 Where today's price sits

BenchmarkAmazon retailThird-party new
Versus all-time low+99.8%+631.7%
Versus all-time high0.0% — today is the high−60.1%
Versus all-time average+14.3%+15.5%
Versus the $25.99 list+7.5%+7.5%

Dated observations only. The tracker publishes five values per channel, not a daily series, so the path between these anchors is unknown and no interpolation is shown.

Three readings follow from the record, and they point the same way:

  1. This is a full-price market. The current figure is simultaneously the all-time high and 14% above the all-time average, on a product whose price has never been discounted below a $25.99 nominal list for long enough to register as an average.
  2. The two extreme third-party values are noise, not market prices. A $69.99 high dated October 2014 — years before the Amazon series shows its own low — is the classic signature of a launch listing or a single reseller offer. A $3.82 low in March 2023 is roughly 14% of today's price and is not a plausible figure for a one-ounce serum from an authorised seller. Both are reported as published and both are excluded from the interpretation, though they do mechanically pull the third-party average.
  3. The two channels are not competing on price. Identical current values, and historical averages 26 cents apart. With one price wearing two labels, the buy box is a fulfilment arrangement rather than a price signal.

4.3 Volatility

ChannelSpread (high minus low)Spread as share of low
Amazon retail$13.9699.8% — a two-times band across eleven years
Third-party new$66.171,732.2% — dominated by the two extremes above
Third-party used$6.3141.4% — narrow, and confined to one week in 2017

The used market is the quietest signal on the page and the most telling: its high and low fall three days apart in May 2017, and it has recorded no current offer at all. That describes a brief resale burst, not a functioning secondary market — which is what one would expect for a consumable at this price point.


5. Verdict

QuestionAnswerConfidence
Is the efficacy claim supported?Yes, by volume and by aggregate: 77% positive on effectiveness across 2,496 mentions, and 4.3 stars from 14,154 ratingsHigh
Is the "zero fragrance" claim true?Literally yes; practically it carries one fragrance-functioning preservative, and buyers noticeHigh
Is the formula appropriate for reactive skin?Not without caution — 20% ascorbic acid at low pH, with two penetration enhancers ahead of itMedium-high
Is the price competitive?It is a full-price market with no discount architecture and channel parity; the price is at its own all-time highHigh
Is the ingredient list complete and verified?Complete as one database records it; not independently verified against the packMedium
Are buyer voices represented?Only in aggregate — no review text or buyer photography renderedLow

6. Method and limits

Method. One capture on 31 October 2026, with the delivery address set to a United States ZIP code before any price was read and the currency pinned to US dollars. All prices are native USD; none was converted, estimated or given as a range. Gallery images were downloaded at 1500 pixels. Rating, star histogram and theme tally come from the same capture. No reviewer name, handle, identifier or profile link was collected, and none appears in this dossier. Ingredient grading is drawn from a community database and is reference material, not a regulatory or dermatological finding.

ElementConfidenceBasis
Price and currencyHighUS delivery context verified in the rendered page; USD price present
Rating and star distributionHighRendered directly
Specifications and claimsHighRendered directly
Theme tallyMedium-highAggregate generated by the marketplace; rounding not disclosed
Review summaryMediumA model-written abstract, not buyer text
Ingredient listMediumSingle channel; no independent count check
Individual ingredient gradingLowSix of eleven rows rated; five unrated
Price statisticsHigh for values, medium for recencyCurrent figures 23 and 35 days old at capture
Buyer reviews and photosNone collectedDid not render; not reconstructed
  1. Review bodies and buyer photographs did not render; no verbatim buyer language appears here.
  2. The second ingredient database was unreachable, so formula-version drift against the current pack cannot be excluded.
  3. Price statistics are all-time only by nature of the source; no period-specific low, high or average exists in this record.
  4. Current price observations are 23 and 35 days old at capture and should be re-verified before any transaction.
  5. Sales rank is a single observation and moves between captures.
  6. Twelve product codes map to this single listing, so packaging generations cannot be separated in the review record.

Snapshot captured 31 October 2026 with a United States delivery context. Prices in US dollars, unconverted. Price and rank move; treat every figure as an observation of that date.