Glabridin 10% vs 90% vs 98%: Which Should You Buy?

A Technical & Commercial Buying Guide for Formulators and Buyers

Searchers comparing glabridin 10 vs. 90 vs. 98 are rarely asking which number looks more impressive on a COA.

They are asking:

• Why is 90% so much more expensive than 10%?
• Which grade should we actually buy?
• Is 98% always better than 90%?
• Can one grade replace another 1:1?
• Which purity fits which product?
• How do we calculate real value (cost per active)?

This page is a buying guide—technical enough for R&D, commercial enough for procurement.

[Request Spec Package by Grade] · [Ask for Cost-per-Active Quote] · [Get Sample Kit] ·
Open Glabridin Ingredient Page

Executive Summary (TL;DR)

Key Takeaways

• Higher purity does not always mean a better formulation.
• The best grade depends on dosage form, active loading, processing, appearance, and total formulation cost.
• Buyers should compare cost per active—not price per kilogram.
• Water-soluble 10% is a different purchase from standard 10%, not a purity upgrade.

Why Does Glabridin Come in Different Grades?

Glabridin is naturally present at low levels in Glycyrrhiza glabra root/rhizome. Commercial grades exist because brands need different balances of:

• Assay strength vs powder mass
• Color/appearance in finished goods
• Cost-in-use
• Processability in oil vs aqueous systems

What do “10%”, “90%”, and “98%” actually mean?

They are standardized assay targets (typically HPLC)—not vanity “product ranks.”

Important: Two suppliers both writing “90%” are only comparable if assay method and identity align.
See How to Choose a Glabridin Supplier.

How grades are typically produced (simplified)

Licorice root (G. glabra)
        ↓
Extraction
        ↓
Purification/enrichment
        ↓
Concentration
        ↓
Standardization to target assay (10%/90%/95%/98%)
        ↓
(Optional) Supramolecular / cyclodextrin inclusion → Water-soluble 10%
        ↓
Finished ingredient + HPLC release

Higher assay grades require more purification work and yield loss—hence the kg-price jump. That does not automatically make them cheaper or better at formula level.

Side-by-Side Comparison of Glabridin Grades

This is the table most buyers need before requesting quotes.

Buyer Insight

Do not shortlist suppliers based on drum price until this table is mapped to your dosage form. A “cheap” 10% can become the expensive choice in a crowded softgel. An “expensive” 98% can become the cheap choice when fill volume is the bottleneck. Also catalog 95% where available—as a middle step between 90% and 98% for premium projects that do not need maximum isolate purity.

Grade Selection Decision Tree

What product are you developing?
│
├── Dietary Supplement
│      │
│      ├── Cost-sensitive capsule / multi-ingredient
│      │      └── 10%
│      │
│      ├── Premium softgel / high-marker beauty capsule
│      │      └── 90% (model 95/98 if fill is tight)
│      │
│      └── Stick pack / drink mix
│             └── Water-soluble 10%
│
├── Cosmetic
│      │
│      ├── Serum / cream / mask (appearance-sensitive)
│      │      └── 90%
│      │
│      └── Clinical / luxury / ultra-low color
│             └── 98% (or 95%)
│
└── Beverage / aqueous RTD concept
       │
       └── Water-soluble 10%
            (Do not default to 90%/98% powder in water)

Choosing the Right Grade for Different Applications

Dietary Supplements

Cosmetic Formulations

Cosmetic usage rates are not interchangeable with dietary supplement serving designs. Keep claim frameworks separate.

Functional Beverages

Use water-soluble/supramolecular glabridin 10%.

Do not assume 90% or 98% will “just dissolve” because purity is higher. Higher purity is still lipophilic unless delivery-modified. Details: Glabridin Formulation Guide.

Medical Aesthetic/High-control Concepts

When low color, high assay, and tight analytical control matter, buyers often evaluate 95–98%. Expect stricter documentation, residual solvent scrutiny, and pilot discipline—not only a higher price.

Formulation Considerations

Solubility

Color Impact

10%  → brown tone risk in light powders, some creams, clear packs
90%  → off-white to white — easier for premium cosmetics
98%  → white — best when color is a product constraint

Color is a commercial specification, not a footnote—especially for serums, white creams, and transparent capsules.

Dosage/Inclusion Logic (B2B)

Design around mg glabridin active / unit, then back-calculate powder mass:

Powder mass ≈ target mg active ÷ assay fraction

Example logic (illustrative):
For 5 mg active glabridin per serving:

• Grade 10% ≈ 50 mg powder
• Grade 90% ≈ 5.6 mg powder
• Grade 98% ≈ 5.1 mg powder

That difference determines capsule size, softgel fill, and companion headroom.

Stability

Protect all standard grades from heat, light, and oxygen. Higher purity does not remove oxidation risk. Packaging (opaque/ foil/nitrogen where justified) still matters.

Processing

• Softgels: pre-disperse in suitable oil carriers; build antioxidant system early
• Capsules: confirm density/flow—10% brown and 90%+ white do not handle identically
• Cosmetics: validate color, odor, and emulsion stability at real use levels
• Aqueous: only with water-soluble grade + matrix tests

Does Higher Purity Always Mean Better Performance?

No.

Higher assay improves active density and often appearance. It does not automatically improve consumer outcomes, claim strength, or formula ROI.

Practical Examples

Case 1 — 90% beats 98% on total value
A serum that already meets color and assay goals on 90% gains little from 98% except higher material cost—unless marketing/regulatory positioning explicitly needs near-isolate purity.

Case 2 — 98% beats 90% on total value
A multi-oil softgel has 8 mg fill left for glabridin. Only 95–98% keeps the target active without enlarging the softgel or cutting companions.

Case 3 — 10% beats both
A capsule with generous fill budget and cost-sensitive Amazon positioning often wins on 10% if education still names standardized glabridin correctly.

Decision Matrix

Cost per Active Ingredient: A Better Way to Compare Value

Procurement mistake #1: ranking vendors by price/kg.

Professional comparison:

Cost per gram (or mg) of glabridin active
plus fill-weight consequences
plus reformulation risk if the grade cannot process

Example Calculation Framework (no list prices)

How to use in RFQs: ask every supplier for a table with:

1. Price/kg by grade
2. Assured assay %
3. Calculated cost per g active
4. Recommended grade for your stated dosage form

Template language and vendor gates: How to Choose a Glabridin Supplier.

Procurement Decision Scorecard

Score your project—not the brochure.

Reading the scorecard: 98% wins specific constraints (color, fill, luxury). 90% wins most premium default projects. 10% wins cost-open capsule systems. Water-soluble 10% wins aqueous—on its own row in real sourcing.

Which Grade Do Different Brands Typically Choose?

These are starting points—not rigid rules. Always re-check fill math and appearance in the real base.

Common Buying Mistakes

Mistake 1 — Buying 98% when 90% is sufficient

You pay isolate pricing for a problem 90% already solved.

Mistake 2 — Ignoring formulation requirements

Purity cannot fix the wrong dosage form (e.g., 90% in a clear drink).

Mistake 3 — Comparing price instead of active content

Price/kg rankings invert after cost-per-active math.

Mistake 4 — Choosing standard grades for beverages

Use water-soluble 10%; do not “hope” that high purity equals water solubility.

Mistake 5 — Not checking HPLC method

“90%” without method context is not a comparable specification.

Mistake 6 — Assuming grades are 1:1 interchangeable

Swapping 10% ↔ 90% changes powder mass, color, excipient balance, and sometimes process behavior. Re-validate.

Mistake 7 — Mixing grades in one SKU without change control

Possible in development; dangerous in commercial release without assay and uniformity redesign.

Questions Buyers Should Ask Before Ordering

1. How is assay determined (HPLC method summary)?
2. Can I see a chromatogram example and three recent COAs for this grade?
3. What is the exact appearance specification (color) for 10% vs 90% vs 98%?
4. Do you offer a true water-soluble/supramolecular 10% as a separate SKU?
5. Can you provide cost per g active across grades on one quote sheet?
6. What grade do you recommend for this dosage form—and why?
7. Can we pilot on 10% and upgrade to 90%/98% later without full re-branding chaos?
8. What packaging protects stability in shipping and storage?
9. Can you support OEM after grade approval?
10. What residual solvent / heavy metal / micro limits apply to this grade?

How KS Nutripharma Helps Brands Choose the Right Grade

Practical support—not slogan marketing:

• Application-based grade recommendation (capsule/softgel/cosmetic/beverage)
• Technical evaluation of fill weight, color, and process fit
• Cost-per-active comparison sheets across 10% / 90% / 95% / 98% / water-soluble 10%
• Pilot samples of the exact commercial grade
• Stability and packaging guidance
• OEM path after raw-material approval
• Documentation pack for multi-market buyers

Request Spec Package by Grade ·
[Ask for Cost-per-Active Quote] · [Get Sample Kit] · [Book Technical Meeting]

Next Step

1. Lock dosage form and target mg active
2. Run the decision tree + scorecard above
3. Request quotes as cost per active, not only price/kg
4. Sample the shortlisted grade only
5. Pilot before scale

Return to pillar: Glabridin Ingredient Manufacturer
Supplier diligence: How to Choose a Glabridin Supplier
Process detail: Glabridin Formulation Guide
Identity caution: Glabridin vs Glycyrrhizin

Related Resources

• Glabridin Ingredient Manufacturer
• How to Choose a Glabridin Supplier
• Glabridin Formulation Guide
• Glabridin vs Glycyrrhizin
• Beauty Supplements