D4, D5 and D6 in Hair Serums: Plan the EU Formula Review Before the Reorder
Plan an EU hair-serum formula review for D4, D5 and D6. Check product category, concentration information, market timing and reformulation implications.
JunChun Beauty Editorial Team · Updated 23 October 2026
Direct answer: Review the specific formula and cosmetic category against the current legal text, supported by substance information and qualified market assessment. Do not equate restrictions on D4, D5 and D6 with a ban on every silicone ingredient.
Use the actual regulatory distinction
Under the updated REACH entry 70, the restriction concerns D4, D5 and D6 at or above 0.1% by weight of the respective substance. The relevant later cosmetic application date is after 6 June 2027; earlier wash-off provisions and other applicable rules still need review source source. Check the exact category and exceptions with the responsible market specialist.
Review the full formula supply chain
Ask about the named substances in the proposed formula, including relevant information from raw-material suppliers. An ingredient declaration alone may not answer every concentration or residual-content question. Keep the reviewed formula and supporting declarations identifiable.
Treat substitution as redevelopment
If changing the sensory base, compare spread, dry feel, performance and component compatibility. Review INCI, instructions and evidence before approving new labels. A replacement ingredient is not automatically a one-for-one substitute in either performance or compliance.
Connect the review to inventory
Map the intended launch, reorder and stock period with the responsible market specialist. Decide which pack and artwork version belongs to each approved formula. The purpose is a controlled transition, not a broad unsupported “ECHA certified” promise.
Build a narrow ingredient-review request
Send the intended leave-in formula and target market to the relevant specialist. Ask which named substances and concentration information must be checked, including applicable raw-material declarations. Record the exact grades and revision dates used in that review. A broad silicone-free positioning request and a review of three specific cyclic siloxanes are different briefs; decide whether your project requires either or both before asking the formulator to change the base.
Compare the replacement with the retained benchmark
Choose the performance attributes the customer pays for: spread, gloss, dry touch, movement and a controlled delivered amount. Evaluate the revised finished sample against the approved reference using matched conditions. Include the actual pump and filled pack. Givaudan presents hemisqualane as an alternative emollient option source, which provides a candidate for discussion rather than a guarantee of identical performance, automatic claim transfer or confirmed JunChun stock.
Keep the old and new purchase versions distinct
For any transition, identify which formula, ingredient label and component combination belongs to each order. Agree how remaining decorated components will be handled before another purchase. Ask the responsible market party to review timing and the intended stock plan. This is especially useful for a distributor shipping to several markets: one artwork or supply-chain assumption should not silently become the rule for every territory.
Request a complete transition quotation
Separate the mature-formula production route, requested redevelopment, component purchase and any additional review or testing. Compare total cash exposure as well as price per filled bottle. If the replacement changes fragrance solubility or dry feel in the sample, resolve that before committing to printed inventory. JunChun can review formula, sampling, packaging and export-document coordination against the brief; the deliverables and market responsibilities belong in the actual project agreement.
A practical buying decision
| Decision point | What to request or compare |
|---|---|
| Regulatory review | Check named substances and the exact product category. |
| Development | Compare the replacement formula and pack. |
| Inventory | Align orders and artwork with the approved version. |
JunChun product and sample route
Start with JunChun’s High-Shine Hair Gloss Serum and compare the selected gloss-serum sample with the customer brief. Agree richness, slip, fragrance, delivered amount and the intended finishing stage. Ask the team to identify the matching formula reference and current supporting information. A requested alkane, ester or alternative dispenser is a defined project option, with sample and packaging review attached.
Selected mature formulas with qualified stock packaging start from 100 pieces per SKU. Packaging changes start from 500, subject to component and process; formula changes and specialist packaging are confirmed separately. Compare the eligible current route with the requested changes at the same quantity.
Frequently asked questions
Is dimethicone the same as D5?
No. Do not substitute one ingredient identity for another when assessing restrictions.
Does a plant-derived replacement guarantee compliance?
No. The full product still requires the relevant safety, formula and market review.
What should I include in a sample enquiry?
Send your EU product category, current formula information and planned reorder dates, destination country and planned quantity. Ask which current samples or development options fit those requirements.
Related products and manufacturing
Request a focused sample comparison
Send your EU product category, current formula information and planned reorder dates, destination country and planned quantity. Ask JunChun which current sample fits the brief and what your requested changes add to the project. Send your project brief or email info@junchunbeauty.com.
Sources and scope
- Commission Regulation (EU) 2024/1328, Annex, entry 70 — Adopted 2024-05-16; published 2024-05-17.
- ECHA: REACH Annex XVII entry 70 restriction conditions — Current indexed text checked 2026-10-23; direct document fetch returned 403.
- Givaudan: Neossance Hemisqualane ingredient description — Publication date not displayed; checked 2026-10-23.
Sources checked 23 October 2026. Comparisons and procurement steps are editorial recommendations; brand and ingredient examples retain their own formula and study scope. Match the selected JunChun sample to its relevant project information and reports.
