Why Kolabtree

Getting started is quick and easy. No upfront fees

It’s free to request a service and invite bids from experts

Discuss requirements with the expert in detail before accepting statement of work from Kolabtree

Collaborate with the expert directly to get your work done the right way

Fund project when you hire the expert, but approve the deliverables only once work is done

Contact Ejaz A.

Contact

Why Kolabtree

Want to hire this expert for a project? Request a quote for free.

Profile Details

Create Project

★★★★★

☆☆☆☆☆

USD 20 /hr

★★★★★

☆☆☆☆☆

Hire Dr. Ejaz A.

Pakistan

USD 20 /hr

Cosmetic and Product Safety Assessor | Chemical Safety Assessor | CPSR GPSR PIF SDS CPNP SCPN | EU UK USA CAN UAE

Profile Summary

I am a PhD in Chemistry with 17+ years of experience in product safety, toxicology, and risk assessment, specializing in cosmetic products and general consumer products.

My work focuses on preparing clear, regulator-ready compliance documentation that supports smooth market entry and reduces regulatory risk. I support clients across the full compliance lifecycle — from formulation review to post-market documentation.

Core expertise includes:
• Cosmetic Product Safety Reports (CPSR)
• Product Information Files (PIF)
• Safety Data Sheets (SDS)
• GPSR / General Product Safety risk assessments
• Required test reports and compliance certificates
• CPNP and SCPN notifications for cosmetics

I work closely with manufacturers, brand owners, importers, and distributors, ensuring products meet EU and UK regulatory requirements and marketplace compliance standards for platforms such as Amazon, Etsy, Shopify, and other online channels.

By combining scientific rigor, practical regulatory knowledge, and extensive industry experience, I deliver defensible, audit-ready documentation that regulators, notified bodies, and marketplaces can rely on.

If you are planning to launch, import, or distribute cosmetic or consumer products in the EU or UK, feel free to message me to discuss your compliance needs.

Open to collaborations with general products, cosmetic manufacturers, private-label companies, and regulatory consultancies.

Subject Matter Expertise

Services

Writing

Writing Technical Writing

Work Experience

Occupational Toxicologist

Centre for Improvement of Working Conditions and Environment Lahore

July 2012 - Present

Chief Cosmetic Safety Assessor/Formulation Scientist

CosmoTox BioSciences (Pvt) Ltd

April 2012 - Present

Deputy Director

Government of Punjab

February 2011 - Present

Sr Quality Control Analyst

Schazoo Zaka Pvt. (Ltd.)

September 2008 - June 2012

Education

PhD (Chemistry)

Government College University Lahore

May 2018 - August 2022

Ph. D (Chemistry)

Government College University

April 2013 - April 2022

Certifications

Certification details not provided.

Publications

WORKING PAPER

Madiha Batool, Uzman Khan, Ameena Fatima, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Syed Ahmad Raza Bokhari, Hamad Ahmad, et al. (2025). Detection and Quantification of Hydroquinone in Whitening Creams Using UV-Visible Spectrophotometry: Health Implications and Regulatory Concerns .

Madiha Batool, Ameena Fatima, Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Syed Ahmad Raza Bokhari, Hamad Ahmad, et al. (2025). Detection and Quantification of Steroid Adulteration in Herbal Medicines Using TLC and UV-Spectroscopy .

Madiha Batool, Uzman Khan, Mehwish Khalil, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Syed Ahmad Raza Bokhari, Hamad Ahmad, et al. (2025). Heavy Metal Contamination in Cosmetics: An Analysis of Lead and Mercury Levels in Commonly Used Products and Associated Health Risks .

Madiha Batool, Uzman Khan, Attia Abdul Ghani, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Syed Ahmad Raza Bokhari, Hamad Ahmad, et al. (2025). Quantitative Analysis of Toxic Metals in Herbal Medicines: Implications for Consumer Safety and Health .

Madiha Batool, Uzman Khan, Attia Abdul Ghani, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Syed Ahmad Raza Bokhari, Hamad Ahmad, et al. (2025). Trace Metals Detection in Drinking Water by analytical techniques, comparison of brands and Implications for Public Health and Environmental Safety .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Advanced Studies on Oncogene Susceptibility in Breast Cancer and Their Therapeutic Targeting .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Bioactive Compounds in Traditionally Used Medicinal Plants: A Review of Their Therapeutic Potential and Applications .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). CRISPR Proteins and Anti-CRISPR Proteins: Mechanisms, Applications, and Future Perspectives .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Evaluation of Non-Enzymatic Antioxidant Activity of Vitamin E in Plasma and Liver Cells: A Comprehensive Review .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Isolation, Identification, and Antibiotic Susceptibility Profile of Staphylococcus aureus from Cow Meat .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Juglone: A Beneficial Bioactive Compound with Therapeutic Potential .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Nanotechnology in Medicine: Innovations, Applications, and Future Prospects .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). The Role of Biomarkers in Guiding Adjuvant Systemic Therapy Decisions for Early-Stage Invasive Breast Cancer .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Treatment Strategies for Type 1 Diabetes Mellitus: Impact on the Progression and Development of Diabetic Nephropathy .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Sabiha Naveed, Hamad Ahmad, Fareed Ahmad, et al. (2025). A Novel GC/MS Method for Simultaneous Determination of Residual Solvents (N,N-Dimethylformamide, N-Methylformamide, Acetophenone, 2-Phenyl-2-propanol, .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Sabiha Naveed, Hamad Ahmad, Fareed Ahmad, et al. (2025). A Novel GC/MS Method for the Determination of Glycols in Textile and Leather Materials: Optimization, Validation, and Application .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Sabiha Naveed, Hamad Ahmad, Fareed Ahmad, et al. (2025). A Novel GC/MS Method for the Determination of Phosphate-Based Flame Retardants in Textile, Leather, and Plastic Materials .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Advancing from 3D to 4D Bioprinting: Exploring the Role of Plants in Treating Microbial Diseases with Natural Products .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Antioxidant and Phytochemical Characteristics of Alstonia boonei Leaves: A Comprehensive Analysis .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Breast Cancer During Pregnancy: Diagnosis, Treatment Challenges, and Clinical Considerations .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Clinical Applications of Stem Cells: Advances, Challenges, and Future Prospects .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). DNA Barcode-Based Authentication of Herbal Medicinal Materials: Advances, Challenges, and Applications .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Sabiha Naveed, Hamad Ahmad, Fareed Ahmad, et al. (2025). Development and Validation of a GC/MS Method for the Extraction and Quantification of Bis-(2,3-dibromopropyl ether) of Tetrabromobisphenol A (Bis-TBBP .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Sabiha Naveed, Hamad Ahmad, Fareed Ahmad, et al. (2025). Estimation of Bis(2,3-dibromopropyl) phosphate (BDBPP) and Tris(2,3-dibromopropyl) phosphate (TDBPP) by a newly established method on HPLC/MS .

Madiha Batool, Uzman Khan, Sehar Ashraf, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Syed Ahmad Raza Bokhari, Hamad Ahmad, et al. (2025). Extraction and Characterization of Fixed Oil from Spinacia oleracea Seeds: Physicochemical Properties and Bioactive Compounds .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Identification, Evaluation, and Treatment of Overweight and Obesity in Adults: Strategies and Clinical Approaches .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Sabiha Naveed, Hamad Ahmad, Fareed Ahmad, et al. (2025). Novel HPLC/MS Method for the Determination of Cationic Surfactants (DHTDMAC, DSDMAC, DTDMAC) in Environmental and Consumer Products .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Sabiha Naveed, Hamad Ahmad, Fareed Ahmad, et al. (2025). Novel Sonication-Assisted Extraction and GC-NPD/MS Analysis of Tris-(aziridinyl) Phosphine Oxide (TEPA) in Textile Specimens .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Pharmacology and Chemistry of Collybolide, Salvinorin A, and Mitragynine: Natural Product-Based Pain Therapeutics .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). Plant-Derived Anticancer Drugs: A Comprehensive Review of Medicinal Plant-Based Cancer Therapeutics .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Sabiha Naveed, Hamad Ahmad, Fareed Ahmad, et al. (2025). Simultaneous Quantification of Glyoxal and Short-Chain Aldehydes in Consumer Products Using a Novel HPLC-PDA: Development, Validation, and Application .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). The Effects of Aging on DNA Methylation: Mechanisms, Implications, and Biological Significance .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). The Impact of COVID-19 on the Immune System: Pathophysiology, Immune Dysregulation, and Therapeutic Implications .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). The Role of Epigenetics in Thyroid Cancer Development: Mechanisms, Biomarkers, and Therapeutic Implications .

Uzman Khan, Muhammad Jahangir, Majid Nazir, Abdul Shakoor, Ejaz Ahmad, Hafiz Muhammad Faizan Haider, Madiha Batool, Syed Ahmad Raza Bokhari, Hamad Ahmad, Nasir Khan, et al. (2025). The Role of Plants in Treating Microbial Diseases: A Natural Product-Based Approach .

JOURNAL ARTICLE

Uzman Khan/ Khan, U/ Uzman, K, Muhammad Jahangir, Majid Nazir/ Nazir M, Dr. Abdul Shakoor, Ejaz Ahmad /E Ahmad /Ejaz A, Hafiz Muhammad Faizan/ Haider, H.M.F, madiha batool, Nasir Khan, Aziz- Ur-Rehman (2025). A streamlined and authenticated GC-MS method for the simultaneous analysis of all regulated chlorinated organic carriers (COCs) from the consumer goods at ng/ mL level . Journal of Liquid Chromatography & Related Technologies.

M. Nazir, U. Khan, M. Jahangir, K. Hayat, S. A. R. Bokhari, A. Shakoor, E. Ahmad, H. M. F. Haider (2024). Exploring the Mechanisms of Indole-Oxadiazole Benzamide Hybrids as Tyrosinase Inhibitors: Insights from Lineweaver-Burk Plot Analysis and Computational Studies . Russian Journal of Bioorganic Chemistry.

Nazir, M., Khan, U., Jahangir, M., Hayat, K., Bokhari, S.A.R., Shakoor, A., Ahmad, E., Haider, H.M.F.(2024). Exploring the Mechanisms of Indole-Oxadiazole Benzamide Hybrids as Tyrosinase Inhibitors: Insights from Lineweaver-Burk Plot Analysis and Computational Studies . Russian Journal of Bioorganic Chemistry. 50. (6). p. 2325-2343.

E. Ahmad, M. Jahangir, N.I. Bukhari, J. Khan, A. Sarwar, T. Aziz, G. Nabi, M. Alharbi, H.A. Thamer, A.F. Alasmari, et al. (2023). Influence of quercetin on amiodarone pharmacokinetics and biodistribution in rats . European Review for Medical and Pharmacological Sciences.

Ejaz Ahmad, Muhammad Jahangir, Muhammad Akhter Ismail, Hafsa Afzal, Shehar Bano, Rahat Shamim, Nadeem Irfan Bukhari, Ejaz Ahmad /E Ahmad /Ejaz A, Ejaz Ahmad /E Ahmad /Ejaz A, Ejaz Ahmad /E Ahmad /Ejaz A, et al. (2023). Influence of Quercetin Pretreatment on Pharmacokinetics of Warfarin in Rats . Current Drug Safety.

Ejaz Ahmad, Muhammad Jahangeer, Zahid Mahmood Akhtar, Tariq Aziz, Metab Alharbi, Abdulrahman Alshammari, Abdullah F. Alasmari, Nadeem Irfan Bukhari, Ejaz Ahmad /E Ahmad /Ejaz A, Ejaz Ahmad /E Ahmad /Ejaz A, et al. (2023). Characterization and gastroprotective effects of Rosa brunonii Lindl. fruit on gastric mucosal injury in experimental rats – A preliminary study . Acta Biochimica Polonica.

Ejaz Ahmad, Muhammad Jahangir, Nadeem Irfan Bukhari, Abid Sarwar, Tariq Aziz, Metab Alharbi, Abdulrahman Alsahammari, Abdullah F. Alasmari, Ejaz Ahmad /E Ahmad /Ejaz A, Ejaz Ahmad /E Ahmad /Ejaz A, et al. (2023). ISOLATION, STRUCTURE ELUCIDATION & ANTIDIABETIC POTENTIAL OF Rosa Brunonii L. FRUIT – FIGHT DIABETES WITH NATURAL REMEDIES . Journal of the Chilean Chemical Society.

Ejaz Ahmad, Muhammad Jahangir, Saiqa Ishtiaq, Hafiz Muhammad Faizan Haider, Pervaiz Akhtar Shah, Nadeem Irfan Bukhari (2021). Carbamazepine Shows Plasma and Tissue Pharmacokinetic Interactions with Ajuga bracteosa Extract in Rats . Planta Medica International Open.

Ejaz Ahmad /E Ahmad /Ejaz A, Ejaz Ahmad /E Ahmad /Ejaz A, Ejaz Ahmad /E Ahmad /Ejaz A, Ejaz Ahmad /E Ahmad /Ejaz A (2020). Rosa brunonii Lindely fruit as a new protective agent evaluated against Rif/INH induced toxicity in rats. Pakistan journal of pharmaceutical sciences.

Jahangir, Muhammad, et al. "Metal II complexes of ethambutol as good enzyme inhibitor and promising antioxidant." Pakistan Journal of Pharmaceutical Sciences, vol. 29, no. 5, Sept. 2016, pp. 1601+. Gale Academic OneFile, link.gale.com/apps/doc/A466940220/AONE?u=anon~3d52f6fd&sid=googleScholar&xid=bb891a51. Accessed 18 Feb. 2025 .

Muhammad Nadeem Arshad, M. Nawaz Tahir, Islam Ullah Khan, Ejaz Ahmad, Muhammad Shafiq, Ejaz Ahmad /E Ahmad /Ejaz A, Ejaz Ahmad /E Ahmad /Ejaz A, Ejaz Ahmad /E Ahmad /Ejaz A, Ejaz Ahmad /E Ahmad /Ejaz A (2008). Methyl (4-bromobenzenesulfonamido)acetate . Acta Crystallographica Section E Structure Reports Online.

Muhammad Jahangir, Muneeba Khalid, & Ejaz Ahmad. (2014). Simultaneous Estimation of Glucosamine Sulfate and Chondroitin Sulfate Mixture. International Journal of Research in Chemistry and Environment (IJRCE), 5(1), 21–27. Retrieved from https://www.ijrce.org/index.php/ijrce/article/view/284 .

OTHER

Khan, U., Jahangir, M., Nazir, M., Shakoor, A., Ahmad, E., Haider, H.M.F., Khan, N., Shahid, M.(2024). Optimized and Validated Lcms/Ms Method for Simultaneous Analysis of All Regulated Perfluorinated Organic Compounds (Pfocs) from Consumer Articles at Ng mL<sup>-1</sup> Level . SSRN.

Khan, U., Jahangir, M., Nazir, M., Shakoor, A., Ahmad, E., Haider, H.M.F., Batool, M., Khan, N., Ahmad, F.(2024). A Streamlined and Authenticated GC-MS Method for the Simultaneous Analysis of All Regulated Chlorinated Organic Carriers (COCs) from the Consumer Goods at ng mL-1level . SSRN.

Khan, U., Jahangir, M., Nazir, M., Shakoor, A., Ahmad, E., Batool, M., Khan, N., Ahmad, F.(2024). A Streamlined and Authenticated Gc-Ms Method for the Simultaneous Analysis of All Regulated Chlorinated Organic Carriers (Cocs) from the Consumer Goods at Ng Ml-1level . SSRN.

Khan, U., Jahangir, M., Nazir, M., Shakoor, A., Ahmad, E., Faizan Haider, H.M., Batool, M., Khan, N., Ahmad, F.(2024). A Streamlined and Authenticated Gc-Ms Method for the Simultaneous Analysis of All Regulated Chlorinated Organic Carriers (Cocs) from the Consumer Goods at Ng Ml-1level . SSRN.

PREPRINT

Uzman Khan (2024). Optimized and Validated Lcms/Ms Method for Simultaneous Analysis of All Regulated Perfluorinated Organic Compounds (Pfocs) from Consumer Articles at Ng Ml-1 Level .

BOOK

Ahmad, Ejaz, Jahangir, Muhammad, Ishtiaq, Saiqa, Haider, Hafiz Muhammad Faizan, Shah, Pervaiz Akhtar, Bukhari, Nadeem Irfan(2021). Carbamazepine Shows Plasma and Tissue Pharmacokinetic Interactions with Ajuga bracteosa Extract in Rats . Planta Medica international open. 8. (01). p. Online-Ressource.

level-one heading