Leslie (Eunchae) Lee

• Development for professional hair color product lines such as Joico, Pravana, Kenra and Mydentity for demi & permanent cream project.
• Supported a principal scientist to develop a new line launching 30 shades of demi gel.
• Attend regular NPI meetings and report the project status.
• Perform the stability testing to confirm the quality of products.
• Engaged in brainstorm meetings with other team members to figure out new product ideas.
• Participated in an innovation day and delivered a new technology item.
• Presented unique hair color products available in the current market during team meetings and shared new ideas.
• Developed innovative formulations by researching and experimenting with various raw materials and processing techniques.
• Tested the recycled aluminum tubes for Joico permanent hair color line to check compatibility.
Collaborated with cross-functional teams to streamline production processes, resulting in reduced waste and increased efficiency.
• Review the pilot batch samples and discuss with brand managers to make decision for improvement.
• Involve with the claim tests such as Bria testing, salon testing, and communicate with claim & legal departments to discuss and prove claim points.
• Continue to join many kinds of training class to build up the knowledges related to cosmetics
• Attend SCC class, AOCS, supplier days, and other education events.

• Development and testing of skin care formulations for Eye Cream, Moisturizer, Face Cream, Serum, Body Lotion, Shampoo, Sunscreen, Lip primer, Ointment, Bead Scrub, Anti imflammatory Cream, Sleeping Mask, Acne Face & Body Scrub, Shower gel, Bubble Mask, Heating Mask, Cleanser, 3 in 1 Shampoo Conditioner & Bodywash, and Mist for Peter Thomas Roth, June Jacobs, Serge Norment and First aid Beauty's current line of products and featured at Sephora and Ulta Beauty.
• Perform stability & component compatibility testing for product formulation.
• Meet with regional cosmetic suppliers on a regular basis to inform and recommend ingredient sourcing.
• Established strong relationships with suppliers to negotiate pricing contracts that benefited both parties financially.

• Developed and tested new and existing formulations for a range of anhydro products such as Lip Sticks, Lip Glosses, Concealers and Contours.
• Performed stability & compatibility testing to assist production.
• Provided sampling for new formulas and made adjustments according to customer requirements.
• Clarified and interpreted customer concepts and briefs while maintaining product formulation requirements

• Supported sales team efforts by providing technical input for marketing materials and product presentations.

• Provided formulation for launched products such as Milk Chocolate Lip Balm, DNA Black Castor Oil 8 SKU, Holiday Room Spray 3 SKU, Hair Food 2 SKU, and Arnica Montana Muscle Pain relief gel.
• Performed basic formulation of Natural Toner, Beard Wax, and Ten Multi-Purpose Natural Oils.
• Assisted a Senior Chemist with a semi-permanent hair dye project.
• Communicated with marketing team to share information about new trends and innovative technology.
• Perform formulations of Skin Care and Hair Products.
• Conduct and monitor stability testing on new formulations and natural ingredients.
• Keep and maintain samples of batch, raw materials, micro test, and finished products.
• Calibrate R&D laboratory equipment regularly.
• Check the production lines and raw materials each time.

• Conducted analysis of imported teas, coffees, and vegetables for agricultural pesticide residues using HPLC and GC.
• Engaged in a research project with a senior researcher to analyze animal antibiotics such as canamycin, apramycin, and oleandomycin to determine whether or not those remained on meat using LC-MASS.
• Attended a business trip as a representative of KFDA to source specimens for a research project.

• Maintained detailed records of experimental procedures, observations, and results for accurate reporting and replication purposes.

• Handled all official documents such as SOP, cGMP, and Product Standard papers to ensure quality.
• Interacted with KFDA and Korea Cosmetic Association to handle requested official papers relevant to regulation.
• Ensured compliance with industry regulations through meticulous documentation of experiments, results, and analyses.
• Analyzed defect rate of incoming material (raw, packaging), process (batch material, line trouble), outgoing material (finished product, customer complaints) and made evaluation which resulted in more efficient work processes.
• Managed QC staff to ensure proper functioning and performance of HPLC, microorganism, UV, moisture content determination, and FTIR.
• Communicated with all departments including customer service, brand managers, and manufacturing team to solve quality issues.
• Cosmetic R&D Basic Formulation Training from R&D Center

• Conducted thorough audits of manufacturing processes, resulting in increased efficiency and reduced defects.

• Developed comprehensive test plans to validate product functionality and performance in various operating conditions.

• Analyzed data from product testing, identifying trends and opportunities for improvement in both design and production processes.

• Utilized root cause analysis techniques to identify underlying issues contributing to product defects or customer complaints.

• Analyzed quality and performance data to support operational decision-making.