The primary purpose of testing Cream Bleach under applicable BIS (Bureau of Indian Standards) guidelines is to ensure that the product is safe for facial and body application, especially given its use of chemical lightening agents. The testing is designed to:

1. Ensure chemical safety
   – To verify that active ingredients like ammonium bicarbonate or hydrogen peroxide (in the activator) are present within permissible limits and pose no risk to skin health.

2. Check for skin irritation or allergic response
   – Through Primary Irritation Patch Tests, the product is assessed for its potential to cause redness, itching, or dermatitis upon application.

3. Test for heavy metal contamination
   – To confirm the absence of lead, arsenic, and mercury, which are harmful even in trace amounts.

4. Evaluate microbiological safety
   – To ensure the product is free from pathogenic microorganisms like E. coli, Pseudomonas aeruginosa, and Staphylococcus aureus, which can lead to infections.

5. Verify pH level
   – To ensure the product maintains a skin-friendly pH, minimizing the risk of irritation or skin barrier disruption.

6. Assess stability and efficacy
   – To confirm the product remains effective, homogeneous, and safe throughout its shelf life without chemical separation or degradation.

7. Check compliance with BIS labeling and ingredient norms
   – Ensures that the product is correctly labeled with all necessary warnings, ingredients, and usage instructions as per Indian cosmetic regulations.

These tests help guarantee that Cream Bleach is safe, effective, and compliant for regular cosmetic use, particularly on sensitive facial skin.