Tranexamic Acid Powder – Professional Cosmetic Formulation Guide
Tranexamic Acid Powder is a professional water-soluble cosmetic ingredient with the INCI name Tranexamic Acid. It is used in cosmetic tone-care and brightening-oriented formulas such as serums, lotions and creams designed for a more even-looking skin tone.
This Tranexamic Acid formulation guide covers water-phase incorporation, use levels, pH, temperature, cool-down processing, niacinamide and other active pairings, formulation frameworks, troubleshooting, stability, preservation and UK-safe cosmetic claims.
Raw-material notice: Tranexamic Acid Powder is a cosmetic raw ingredient, not a finished skincare product. Do not apply it neat, use it directly on skin or mix it into a finished product in the hand. To purchase it, visit the Tranexamic Acid product page.
Quick answer: what is Tranexamic Acid Powder?
Tranexamic Acid Powder is the cosmetic raw material with the INCI name Tranexamic Acid. It is a white crystalline, water-soluble powder used in professionally formulated cosmetic tone-care products. It should be dissolved in the formulation water and incorporated uniformly into the aqueous phase.
The current JustGlow product guidance uses a development range of 2–5%, with a typical development pH around 5–6 and cool-down addition below 40°C. These are formulation-development parameters, not a medical dosage or a guarantee of finished-product performance.
Why formulators use Tranexamic Acid
- Water-soluble active: fits aqueous serums, gels, lotions and emulsions.
- Tone-care positioning: suitable for cosmetic formulas designed for a more even-looking skin tone.
- Easy phase placement: dissolves in the water phase when used at a suitable level and process.
- Pairs with other water-phase actives: can be evaluated with niacinamide, Alpha Arbutin, Ectoin and selected vitamin C derivatives.
- Useful for professional development: its pH, use level and water-phase route make it straightforward to screen in a controlled base.
Do not describe cosmetic Tranexamic Acid Powder as an oral, injectable or medical treatment. Finished-product claims must be appropriate for the intended market and supported by evidence.
At-a-glance technical profile
| Parameter | Formulation information |
|---|---|
| INCI name | Tranexamic Acid |
| Physical form | White crystalline powder |
| Functional class | Water-soluble cosmetic tone-care ingredient |
| Solubility / phase | Water soluble; add to the aqueous phase |
| Development use level | 2–5%, subject to destination-market suitability and finished-product assessment |
| Development pH | Approximately pH 5–6 |
| Preferred addition | Dissolve in formulation water; cool-down addition below 40°C |
| Finished formats | Serums, gels, lotions and creams |
| Preservation | Not a preservative; water-containing products require a complete preservation system |
Recommended use levels
| Development level | Use | What to check |
|---|---|---|
| 2% | Low-to-moderate compatibility screen | Clarity, pH, sensory feel and active compatibility |
| 3% | Balanced development screen | Viscosity, tack and compatibility with other dissolved actives |
| 4–5% | Higher development screen | Solubility, total dissolved solids, pH, stability and destination-market suitability |
Start with a control, 2% and 5% only if the formula and market permit. Higher concentration can change the feel, clarity, osmolarity and viscosity of the finished product. Confirm the current specification before scaling.
How to formulate Tranexamic Acid
Tranexamic Acid Powder is water soluble and belongs in the aqueous phase. The most reliable method is to pre-dissolve it in a measured portion of deionised water before adding it to the main batch.
Water-phase method
- Reserve part of the formulation water.
- Weigh Tranexamic Acid accurately.
- Add the powder gradually to the reserved water with mixing.
- Continue mixing until the solution is visibly uniform.
- Add the solution to the main water phase.
- Proceed with the emulsion, gel or serum process.
- Cool below 40°C before adding temperature-sensitive materials and preservative where required.
- Measure final pH around the intended development range of 5–6, then assess the complete formula.
Do not add Tranexamic Acid directly to the oil phase. If the formula is an emulsion, the oil phase should contain the selected emollients and oil-soluble ingredients while Tranexamic Acid stays in the aqueous phase.
Tranexamic Acid in serums and gels
Aqueous serums are a convenient format because they avoid an oil-phase carrier. Add the active before the final viscosity evaluation if the formula contains carbomer, Pemulen, hyaluronic acid or another polymer.
- Pre-dissolve in water rather than adding the powder to a viscous gel.
- Keep the pH within the planned range after all actives and preservative are present.
- Check whether the total active and humectant load creates tack.
- Test the final package for clarity, dispensing and pilling.
Tranexamic Acid in emulsions
In a cream or lotion, dissolve Tranexamic Acid in the water phase before emulsification or add it during cool-down as a pre-dissolved solution. Do not assume that a water-soluble active can be added to a finished emulsion without affecting viscosity or preservation.
Emulsion sequence
- Prepare the water phase with the active dissolved in deionised water.
- Prepare the oil phase and emulsifier system separately.
- Emulsify using the selected process.
- Cool under controlled mixing.
- Add any cool-down ingredients below their required temperature.
- Check and adjust final pH around 5–6 if compatible with the complete formula.
- Evaluate after 24–48 hours and during stability testing.
Pairing Tranexamic Acid with other actives
| Ingredient | Phase | Development note |
|---|---|---|
| Niacinamide | Water phase | Popular tone-care pairing; balance total active level and pH |
| Alpha Arbutin | Water phase | Check the combined pH, heat exposure and regulatory limits |
| Kojic Acid | Water phase | Use caution with pH, oxidation, colour and applicable restrictions |
| Ethyl Ascorbic Acid | Water phase | Check pH, light and colour stability of the combined active system |
| Ectoin | Water phase | Hydration and tone-care concept; assess total dissolved solids |
| Alpha Bisabolol | Oil phase | Keep separate from Tranexamic Acid and add through the emulsion’s oil phase |
Using several actives in one formula increases formulation complexity. Build the base with one active first, then add additional materials one at a time and record pH, clarity, colour, viscosity and stability.
Starter formulation framework
| Component | Starting range | Phase / role |
|---|---|---|
| Tranexamic Acid | 2–5% | Water phase; tone-care active |
| Niacinamide | Supplier-guided | Water-phase supporting active |
| Glycerin | 2–4% | Humectant |
| Hyaluronic acid or gel polymer | Supplier-guided | Viscosity and hydration feel |
| Preservative | Supplier-guided | Microbiological protection |
| pH adjustment | q.s. | Target the complete formula around pH 5–6 if compatible |
| Purified water | q.s. to 100% | Continuous phase |
For an emulsion, add the oil phase and suitable emulsifier separately. For a serum, keep the first screen simple so that any change in clarity or viscosity is easy to diagnose.
Troubleshooting
| Observation | Possible cause | Response |
|---|---|---|
| Powder does not dissolve | Insufficient water, poor mixing or addition to a viscous phase | Pre-dissolve in a measured portion of deionised water |
| Formula becomes cloudy | Other actives, salts, polymer interactions or incomplete dissolution | Make a Tranexamic Acid-and-water control and compare with the full formula |
| Gel viscosity changes | pH or dissolved-solids effect on the polymer | Measure pH after equilibration and review total active/solvent load |
| Serum feels tacky | High active, glycerin or glycol load | Reduce humectant load or rebalance the sensory system |
| Emulsion separates | Emulsifier/process issue or active changing rheology | Compare with a control without Tranexamic Acid and review the process |
| pH drifts | Late additions or inaccurate measurement | Calibrate the meter and measure at a defined temperature |
| Colour changes | Other actives, oxidation, light or contamination | Review the active combination, packaging and storage conditions |
Stability, preservation and packaging
- Check clarity, colour, odour, pH and viscosity at day 0 and after 24–48 hours.
- Run room-temperature, cool-storage and elevated-temperature tests.
- Assess combined-actives formulas for colour and precipitation.
- Use opaque or airless packaging where the complete formula is light sensitive.
- Validate preservative efficacy in water-containing products.
- Check pump, dropper, tube or jar compatibility with the final viscosity.
Tranexamic Acid is not a preservative. The finished formula still requires a suitable preservation system and microbiological assessment.
Common questions
What is the INCI name?
The INCI name is Tranexamic Acid.
Is Tranexamic Acid Powder water soluble?
Yes. Dissolve it in a measured portion of formulation water and add it to the aqueous phase.
What use level should I use?
The current product guidance is 2–5%, subject to destination-market suitability and finished-product assessment.
What pH should I use?
A development range around pH 5–6 is used in the current product guidance. Choose the final pH for the complete formula.
Can I add it during cool-down?
Yes. A cool-down addition below 40°C is a practical method when the active has been pre-dissolved.
Can I combine it with niacinamide or Alpha Arbutin?
Yes, both are water-phase development pairings. Test total active load, pH, clarity, colour, viscosity and stability.
Is it a treatment for melasma or hyperpigmentation?
This is a cosmetic raw material. Use cosmetic tone-care and even-looking-skin wording only where the finished-product claim is substantiated and permitted.
Is it a preservative?
No. It is a water-soluble cosmetic active, not a broad-spectrum preservative.
Storage and handling
Keep tightly closed, dry and protected from light and contamination. Follow the current SDS, batch label and COA for storage and shelf life. Use clean, dry tools and do not introduce moisture into the powder container.
Professional compliance reminder
The finished-product manufacturer is responsible for formula safety, claims substantiation, microbiological quality, packaging compatibility, GMP records and market-specific compliance. This guide is formulation education and does not replace a CPSR or other professional assessment.
Buy Tranexamic Acid Powder
Visit the Tranexamic Acid Powder product page for pack sizes and current technical documents.
The product page links back to this Tranexamic Acid formulation guide in Ingredients A–Z.
Technical documents
Review the current JustGlow SDS and batch-specific COA before manufacture.