: Always match the extensions to the ends of your hair , not the roots, as this is where they will blend. Many brands like Luxy Hair and Bellami offer virtual color matching via selfies or sample swatches. 2. Choose Your Weft Type

Sew-in extensions, also called wefts, come in two primary varieties:

: These are sewn together by a machine, making them thicker and more durable. They can often be cut into smaller pieces without shedding.

: These are thinner and lay closer to the scalp for a more discreet look. Caution: You generally cannot cut hand-tied wefts without them unraveling. 3. Determine the Right Quantity

: Fine hair requires lighter wefts to avoid scalp strain. Heavier sew-ins are better suited for medium to thick natural hair.

Buying sew-in hair extensions online requires more than just picking a pretty color; it involves understanding hair quality, choosing the right weight for your natural density, and verifying the ethics of your supplier. This guide covers everything from choosing your hair type to finding reputable online stores. 1. Identify Your Hair Type and Needs

: Opt for 100% human hair , specifically Remy hair , where cuticles are aligned to prevent tangling. Virgin hair is the highest quality (never chemically processed) but also the most expensive.

COURSE DESCRIPTIONS

  • First Day's Agenda
    - Nissei company profile
    - The molding machine: general descriptions
    - Exploring the actual machine
    - Manual operation procedures, including mold setup
    - Procedure for automatic operation
  • Second Day's Agenda
    - Details of the electronic controller
    - Optimizing the molding conditions
    - Controlling the injection process
    - Statistical quality control
    - Starting the machine and molding operation
  • Third Day's Agenda
    - Hydraulic components and circuits
    - Electrical diagrams
    - Diagnostic functions and troubleshooting
    - Maintenance and inspection
    - Presentation of Completion Certificates
NISSEI School USA

Nissei America Headquarters and Nissei Texas Technical Center

HOURS

9:00am to 4:30pm
*Lunch 12 noon to 1PM


FEES

$399.00 per person
*including textbooks and lunch


REGISTRATION FORM DOWNLOAD

After confirming the availability (please call or email the location of your choice), please fill out and send us the registration form.

LOCATIONS

NISSEI LA

Los Angeles Tech Center

623 S State College Blvd. #10A
Fullerton, CA 92831
Phone: 714-693-3000
Size: 12 ppl/course
NISSEI Chicago

Chicago Tech Center

721 Landmeier Road
Elk Grove Village, IL 60007
Phone: 847-228-5000
Size: 11 ppl/course
NISSEI New Jersey

New Jersey Tech Center

1085 Cranbury South River Road Suite 7
Jamesburg, NJ 08831
Phone: 732-271-4885
Size: 12 ppl/course
NISSEI Texas

Texas Tech Center

3730 Global Way
(formerly Lyster Rd)
San Antonio, TX 78235
Phone: 732-271-4885
*Minimum of 10 ppl/course

Buy Sew In Hair Extensions Online May 2026

: Always match the extensions to the ends of your hair , not the roots, as this is where they will blend. Many brands like Luxy Hair and Bellami offer virtual color matching via selfies or sample swatches. 2. Choose Your Weft Type

Sew-in extensions, also called wefts, come in two primary varieties: buy sew in hair extensions online

: These are sewn together by a machine, making them thicker and more durable. They can often be cut into smaller pieces without shedding. : Always match the extensions to the ends

: These are thinner and lay closer to the scalp for a more discreet look. Caution: You generally cannot cut hand-tied wefts without them unraveling. 3. Determine the Right Quantity Choose Your Weft Type Sew-in extensions, also called

: Fine hair requires lighter wefts to avoid scalp strain. Heavier sew-ins are better suited for medium to thick natural hair.

Buying sew-in hair extensions online requires more than just picking a pretty color; it involves understanding hair quality, choosing the right weight for your natural density, and verifying the ethics of your supplier. This guide covers everything from choosing your hair type to finding reputable online stores. 1. Identify Your Hair Type and Needs

: Opt for 100% human hair , specifically Remy hair , where cuticles are aligned to prevent tangling. Virgin hair is the highest quality (never chemically processed) but also the most expensive.