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Natural Liquid Castile Soap (Unscented / Essential Oil Versions)

Pure, Natural, and Traditional. A timeless liquid soap formulation made from 100% vegetable oils (typically Olive and Coconut) via traditional saponification with Potassium Hydroxide (KOH).

Core Features:

  • 100% Natural Origin: Free from synthetic surfactants (SLS/SLES), purely oil-based.

  • Crystal Clear Formula: Optimized sequestering agents and cooking process for high transparency.

  • Versatile Base: Can be sold as an unscented hypoallergenic wash or customized with essential oils.

Available Variations: Formula File, Documentation Pack, Cost & Margin Pack, Full Package. Select your package below to see details.

Price range: $199,00 through $1.499,00

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Pure, Plant-Based Tradition: Natural Liquid Castile Soap

100% Saponified Oils. No Synthetics. Infinite Uses.

In a market saturated with synthetic detergents and harsh sulfates (SLS/SLES), consumers are rushing back to nature. Liquid Castile Soap is the gold standard of natural cleansing. It is not a "mixture" of chemicals; it is a true soap created through the traditional saponification of vegetable oils with Potassium Hydroxide (KOH).

Our Natural Liquid Castile Soap Formulation allows you to manufacture this authentic, premium product with perfect clarity and viscosity—a technical challenge that many amateur formulators fail to master.

The "Green" Advantage

This formulation creates a crystal-clear, golden liquid soap that appeals to the most eco-conscious consumers.

  • True Castile Definition: Formulated strictly with vegetable oils (typically a blend of Olive, Coconut, and Castor oils) to ensure a rich, moisturizing lather without stripping the skin.

  • Zero Synthetics: Contains NO sulfates, NO parabens, NO artificial thickeners, and NO petrochemicals. It is fully biodegradable and vegan.

  • The "Swiss Army Knife" of Soap: This formula is designed as a versatile "Base." It can be sold Unscented for sensitive skin or babies, or easily customized with Essential Oils (Lavender, Peppermint, Tea Tree) to create a diverse product range.

Commercial Applications (The 18-in-1 Concept)

Because of its natural purity, this single formulation can be bottled and marketed for multiple distinct uses:

  • Body Wash & Hand Soap: Gentle enough for daily use.

  • Face Cleanser: Non-comedogenic oil base.

  • Baby Wash: (Unscented version) Hypoallergenic.

  • Green Household Cleaner: Can be used for floors, laundry, and dishes.

  • Pet Shampoo: Safe for animals.

Why Buy This Formulation?

Manufacturing Liquid Castile Soap is significantly more complex than mixing simple surfactants. It involves a chemical reaction (saponification) that requires precise calculations of lye (KOH) and heat management.

This Tech Pack solves the common production headaches:

  • Clarity: Prevents the soap from turning cloudy or separating over time.

  • Viscosity: Achieving a "gel-like" thickness in natural soap is difficult; our formula includes natural thickening techniques using HEC or Salt curves (depending on your preference stated in the file).

  • Sequestering: preventing soap scum in hard water.

Technical Specifications

  • Process: Hot Process Saponification (Potassium Hydroxide).

  • pH: Naturally Alkaline (9.0 – 10.0) – Note: True soap cannot be pH neutral.

  • Appearance: Clear to Golden Yellow Viscous Liquid.

  • Preservative System: Natural-compliant options suitable for high pH.

What You Receive

  • Master Formulation (Excel): Precise oil ratios and lye calculations.

  • Saponification Guide: Step-by-step heating and mixing instructions to ensure a complete reaction (safety first).

  • Dilution & Thickening Guide: How to adjust the final texture.

  • Essential Oil Blending: Tips for adding scent without breaking the soap's viscosity.

Master the art of real soap making. Manufacture the purest product on the market.

All products offered on Formulation Market are professionally developed technical services, not physical goods. Each formulation and document set is prepared specifically for your order based on the selected package type and project scope. Depending on the chosen package, delivery may include formulation files, production notes, SDS / MSDS, TDS, COA, regulatory and labeling guidance, cost calculation tools, and production or scale-up documentation. All content is created exclusively for the purchasing client and is not reused, resold, or shared with third parties.Preparation time is typically5–7 business days, depending on complexity. All deliverables are provided asdigital files (Word, PDF, Excel, and technical documents) and are sent via email upon completion. Multi-language delivery options are available upon request.

Package Comparison – From Basic to Complete

Each package builds on the previous one. As you move to higher tiers, you receive everything from the earlier package plus additional tools, documentation, and production support.

Standalone formula file showing professional detergent and cosmetic formulation structure

Formulation Pack

This package includes the core formulation only, designed for professionals who already have production experience.

Includes:

  • Complete formulation with ingredient list and ratios
  • Functional explanation of raw materials
  • Short production notes

Best for:
Experienced manufacturers who only need the formulation structure.

Chemical documentation pack icon representing SDS MSDS TDS COA and regulatory labeling

Compliance Pack

This package includes everything from the Formulation Package, plus essential technical and regulatory documentation.

Includes:

  • All items from Formulation Pack
  • SDS / MSDS
  • Technical Data Sheet (TDS)
  • Certificate of Analysis (COA)
  • Label & regulatory information (product-dependent)

Best for:
Brands preparing for market entry, compliance, or internal technical review.

Cost and Margin Analysis Pack for Chemical Formulations

Business Pack

This package includes everything from the previous packages, plus detailed cost and profitability tools.

Includes:

  • All items from Formulation and Compliance Packs
  • Editable cost calculation Excel file
  • Raw material cost structure
  • Packaging, labor, and logistics parameters
  • Margin and profitability scenarios

Best for:
Companies evaluating production feasibility, pricing, and business viability.

Full Package – Complete Chemical Formulation System

Complete System

This is the most comprehensive package, covering the entire journey from formulation to full-scale manufacturing.

Includes:

  • All items from Formulation, Compliance, and Business Packs
  • Detailed production recipe
  • Step-by-step process flow
  • Equipment recommendations
  • Critical control points (CCPs)
  • Scale-up guidance (lab → pilot → industrial)

Best for:
Companies seeking a ready-to-produce, market-ready complete system with full technical confidence.