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THE INGREDIENT EDIT BEAUT.IN / 38095

SODIUM SULFITE

Sodium Sulfite is the inorganic salt that conforms to the formula:

Explore benefits ↗
YOUR LABEL, DECODED.Follow the references ↓
INCI / SOURCE NAMESODIUM SULFITE
CAS REFERENCE7757-83-7
RECORDED FUNCTIONS3 cosmetic roles
RESEARCH COVERAGESource dossierView evidence scope ↗
01 / BENEFITS & USES

What it brings to beauty.

Explore the recorded roles of SODIUM SULFITE and what they can mean in a cosmetic formula.

Source-function explanation

The panels below interpret this ingredient’s recorded functions. They describe possible contributions, not proven clinical results. Any individually reviewed study is shown separately.

01 / COSMETIC CONTEXT

For skin

No skin-specific function has been mapped from this source record. Ingredient-specific skin benefits have not yet been reviewed here.

02 / COSMETIC CONTEXT

For hair

  • Hair Waving Or StraighteningContributes to a formulated system that changes hair shape; the role does not establish reduced damage.
03 / FORMULATION ROLE

In cosmetics

  • Hair Waving Or StraighteningHelps change hair shape within a formulated waving or straightening system.
  • AntioxidantHelps slow oxidation in a cosmetic formula. This function alone does not demonstrate a clinical skin benefit.
  • ReducingParticipates in reduction reactions within a cosmetic formulation.

Possible formulation contexts

Examples associated with the recorded function classes; these are not verified product listings or instructions to apply the raw ingredient.

  • Waving and straightening systems
  • Oxidation-control systems
  • Controlled chemical-reaction systems
Read the benefit with the formula.

Ingredient form, concentration, pH, delivery system and contact time can change the result. A skin finding does not establish a hair benefit; a conditioning or fibre result does not establish hair growth.

CosIng record · function source ↗
02 / KNOW THE NAME

Ingredient identity

COSING SOURCE DESCRIPTION

Sodium Sulfite is the inorganic salt that conforms to the formula:

European Commission · source text, with formatting normalised · CC BY 4.0
Source ingredient name
SODIUM SULFITE
CAS identifier(s)
7757-83-7
EC identifier(s)
231-821-4
Other source names / search aliases
natrii sulfis

CAS and EC identifiers are source references. A botanical extract, polymer or mixture may have more than one identifier; a name does not establish purity, supplier grade or sourcing.

Chemical names in the source

  • Sodium sulphite

Matched chemical reference

PubChem compound ID
24437
Molecular formula
Na2O3S
Molecular weight
126.05 g/mol
Systematic name
disodium;sulfite
InChIKey
GEHJYWRUCIMESM-UHFFFAOYSA-L

Matched through one source CAS and a confirmed ingredient name or source alias. These facts describe the matched PubChem record; they do not describe particle form, supplier grade or finished-product performance.

03 / INSIDE THE FORMULA

What does it do?

Antioxidant

Helps slow oxidation in a cosmetic formula. This function alone does not demonstrate a clinical skin benefit.

Hair Waving Or Straightening

Helps change hair shape within a formulated waving or straightening system.

Reducing

Participates in reduction reactions within a cosmetic formulation.

Functions describe possible roles in a formulation. They do not establish the performance of every product containing this ingredient.

04 / READ THE LABEL

Match the complete name.

Look for the complete name SODIUM SULFITE. Similar words, derivatives and salts can refer to different ingredients.

A label usually does not tell you the supplier grade, extraction method or exact concentration of each ingredient. An individual ingredient cannot reveal the overall behaviour of a finished formula.

Expanded Beaut.in explanation in progress

This entry currently documents source identity and functions. Ingredient-specific efficacy studies, sensitisation context and India-specific restrictions still need an editorial review.

05 / EVIDENCE & REGULATORY CONTEXT

Keep the context in view.

European Union source references

Conditions below are taken from the dated CosIng annex export. A reference can cover a group of substances and specific product types. Read all conditions together; this is not an assessment of an Indian product.

Annex III/99 · Restricted-substance list (EU source) Identity matched to source row
Chemical name / INN
Inorganic sulfites and bisulfites (12)
Product Type, body parts
(a) Oxidative hair dye products
(b) Hair straightening products
(c) Self-tanning products for the face
(d) Other self-tanning products
Maximum concentration in ready for use preparation
(a) 0.67% (as free SO2)
(b) 6.7% (as free SO2)
(c) 0.45% (as free SO2)
(d) 0.40% (as free SO2)
Other
For purposes other than inhibiting the development of micro-organisms in the product. This purpose has to be apparent from the presentation of the product
Regulation
(EC) 2009/1223
Update Date
17/10/2010
European Commission · Annex source ↗
Annex V/9 · Preservative list (EU source) Identity matched to source row
Chemical name / INN
Inorganic sulphites and hydrogensulphites (5)
Maximum concentration in ready for use preparation
0.2% (as free SO2)
Regulation
(EC) 2009/1223
Update Date
16/10/2010
European Commission · Annex source ↗
India

Applicable Cosmetics Rules and standards need to be checked for the ingredient, product type and use. Ingredient-specific restrictions have not yet been mapped here.

European Union

CosIng records do not authorise use. Check the current Cosmetics Regulation and annexes for restrictions and conditions.

United States

FDA guidance has a US scope. Product classification, colour additives and other ingredient conditions require separate checks.

Individual experience

No personalised suitability or allergy assessment is provided. A source function is separate from human efficacy and finished-product testing.

Independent clinical evidence synthesis
Not yet completed
Ingredient safety score
Not assigned
Concentration / exposure limits
Not inferred from the ingredient name
06 / FOLLOW THE REFERENCE

Sources & record history

About this image

2D structure · PubChem CID 24437 · 2D structure depiction using the PubChem isomeric SMILES record. This does not show particle size, crystal form, supplier grade or raw-material appearance.

Structure rendered for Beaut.in from PubChem data.

Original image / data source ↗

Rendered from the source isomeric SMILES representation. This is not a photograph of the cosmetic raw material. · Reference checked 28 October 2026.

  1. European Commission · CosIng ingredient record ↗

    Identity, identifiers and functions. Snapshot checked 28 October 2026. CosIng source reference: 38095.

  2. European Commission · Database scope & limitations ↗
  3. CDSCO · India cosmetics framework ↗
  4. FDA · US cosmetics guidance ↗

Beaut.in explains ingredient information in original language. Source inclusion does not constitute endorsement. Source descriptions and annex-table fields are reproduced with credit to the European Union; formatting is normalised. The current record is a dated snapshot, not a live regulatory monitor. Reuse terms: European Commission · CC BY 4.0 ↗.

THE BEAUT.IN PRODUCT INDEX

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This growing index keeps its product reports on Beaut.in. References were captured on 27 October 2026. Final prices, stock, pack details, seller, delivery and returns must be checked at the retailer.

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Similar purpose does not establish an equivalent formula or a verified dupe. No quality score is calculated. Ingredient detail here is a source reference; confirm the current Indian pack.