SPF, UVA and UVB Analysis in Sunscreen Products

SPF, UVA and UVB Analysis in Sunscreen Products

SPF, UVA and UVB Analysis in Sunscreen Products is a set of standardized tests used to determine the level of protection provided by sunscreen products against ultraviolet radiation. SPF, UVA and UVB Analysis in Sunscreen Products is essential for safety, regulatory compliance, and claim substantiation.

SPF, UVA and UVB Definitions

• SPF: Indicates protection against UVB-induced erythema

• UVA: Associated with skin aging and long-term damage

• UVB: Responsible for sunburn and acute skin effects

Therefore, SPF, UVA and UVB Analysis in Sunscreen Products requires combined evaluation.

Analytical Methods

In Vivo SPF Determination

• Performed on human volunteers

• Calculation based on Minimal Erythema Dose (MED)

 Reference Standard:

• ISO 24444

In Vitro UVA Protection Factor

• Product application on PMMA plates

• UV spectrophotometric measurement

 Reference Standards:

• ISO 24443

• COLIPA Guidelines

Regulatory Framework

• ISO 24444 – SPF testing

• ISO 24443 – UVA protection

• EU Cosmetic Regulation (EC) No 1223/2009

Within this framework, SPF, UVA and UVB Analysis in Sunscreen Products supports proper labeling and market placement.

Interpretation of Results

Results confirm:

• Declared SPF accuracy

• UVA protection adequacy

• UVA/UVB ratio compliance

Thus, SPF, UVA and UVB Analysis in Sunscreen Products is mandatory for reliable sunscreen claims.