Cat.No.	Product Name	CAS	Inquiry
PE-0256	Polyethylene glycol (MW:400)	25322-68-3	Inquiry
PE-0257	Polyethylene glycol (MW:4000)	25322-68-3	Inquiry
PE-0258	Polyethylene glycol (MW:6000)	25322-68-4	Inquiry
PE-0267	Sesame oil	533-31-3	Inquiry
PE-0264	Sodium dodecyl sulfonate	2386-53-0	Inquiry
PE-0272	Span 80	1338-43-8	Inquiry
PE-0261	Vaseline	8009-03-8	Inquiry
PE-0262	White beeswax	8006-40-4	Inquiry

Product Introduction

Ointment base is a drug excipient used as a carrier or vehicle for the active ingredient in topical formulations. It is the main component of the formulation and provides the physical structure, consistency and texture of the final product.

Categories of Ointment Base

• Absorbent matrices

These are ointment bases that contain a mixture of water and oil; they are usually more readily absorbed into the skin and are less greasy than hydrocarbon bases.

• Washable bases

These are ointment bases that consist of a mixture of oil and water, along with an emulsifier to help keep these two phases together.

• Water-soluble bases

These ointment bases consist of a mixture of water-soluble polymers. They are usually non-greasy and wash off easily with water.

Factors Affecting Ointment Bases

Ointment matrices play a key role in determining the effectiveness, stability and usability of the final product and can have a significant impact on patient outcomes. The following factors currently need to be considered when examining the ointment base.

• Skin permeability

The ability of active ingredients to penetrate the skin can be influenced by the type of ointment base used. Water soluble bases may provide better penetration due to their ability to moisturize the skin.

• Stability

The choice of ointment base can affect the stability of the active ingredient. For example, certain active ingredients may degrade or become less effective in certain types of ointment matrices.

• Patient preference

The choice of ointment matrix can also affect patient compliance and satisfaction.

• Formulation requirements

The desired texture, consistency and appearance of the final product may also influence the choice of ointment base. The choice of ointment base should be carefully considered in light of the specific needs of the formulation and the intended use of the end product.