CGR-BP-002
Aqueous Cream
Final editorial decision
The wax prerequisite is fulfilled by an accepted lot of supplier-qualified pharmacopoeial anionic wax matched to the reference composition. In-house wax manufacture is not necessary to implement this monograph. The 35-day figure remains a conditional general ceiling, not experimental stability or an assigned batch BUD. Phenoxyethanol 1% w/w: justify suitability in the final formulation and container. MHRA reports irritation with SLS-containing aqueous cream, especially in children and leave-on use. Apply the shortest supported limit, including the remaining BUD of any compounded base.
Required evidence
- Defined and approved supplier grade of anionic BP wax, with routine acceptance of the actual lot; accepted other ingredients and the exact reference formula/process.
- Justified finished-form category, defined container/storage, homogeneity and source-specific QC. For a preserved aqueous form, justify preservative suitability at the final pH and in the complete composition.
- For a compounded base, record its actual preparation date, release and remaining BUD. The new final mixture does not reset the base dating clock.
- Assess phenoxyethanol suitability in the final composition. Retain MHRA advice on possible irritation with SLS-containing aqueous cream, especially in children and leave-on use.
Closure criteria
- Close the research dependency on in-house wax by explicitly adopting the defined purchased pharmacopoeial grade. Incoming acceptance remains a routine requirement of actual compounding.
- Actual release requires the completed batch record, acceptable applicable QC and a signed BUD assessment applying the shortest supported limit.
- Do not apply a numerical default unless its category, compatible temperature and formulation suitability are supported. A new specific study is needed for extension or an unresolved physical/chemical concern, not merely to present a conditional default.
Scope
Final editorial decision dated 14 October 2026. This is not a certificate of laboratory results or actual batch release.
Sources and references
- USP General Chapter <795> FAQs, November 1 2023Questions 52, 60, 61, 62, 63; printed pp.11,14
- VVF manufacturer: Emulsifying WaxesProduct table: Vegarol EW 200; compare EW 100 and EW 300
- Croda Pharma manufacturer: Crodex A pharmaProduct description and pharmacopoeia compliance
- British Pharmacopoeia: Content Usage Licence for Individual UsersSections1,4 and5
- MHRA — Aqueous cream: may cause skin irritationAdvice for healthcare professionals