Sandy, the lively and sweet Aussie in "Grease," has some of the most iconic hairstyles in the movies. You can copy her high ponytail when she first arrives at Rydell High and you can also flaunt her straight hair at the sleepover with the Pink Ladies. But everyone's favorite Sandy hairstyle has to be her perfect curls at the end! Protecting your hair with a thermal spray and taking the time to carefully style your hair will help you create a Sandy-worthy hairstyle in no time.
Steps
Method 1 of 3: Create a High Ponytail

Step 1. Spray some hairspray to the roots of the hair
This is especially important if you have recently washed your hair, as the hairspray will prevent it from slipping off the elastic. Lift the hair in large sections and apply hairspray to the roots.

Step 2. Divide the hair into 3-4 sections
Having too many sections is not recommended as this will make the ponytail look too curly. For Sandy's hairstyle, you only need 3-4 large, loose curls, so divide the hair into 4 equal sections: one on each side and two at the back. Once you've parted your hair, spray it with heat protectant so the straightening iron doesn't damage it.

Step 3. Use rollers to make curls
Place a 1.25-inch (3.15-cm) wide roller about halfway between the roots and ends of the hair. Roll the hair around the roller until you reach the end of the hair. Once you have wrapped all of your hair under the roller, roll it in an upward rotation towards the hair above the roller. Then secure it with a roller clamp.
Repeat this process for each section of hair

Step 4. Use a straightening iron to warm up the curls
Use a 1 to 2-inch (2.5 to 5.1 cm) flat iron and place it over the roller. You should leave it there for about 5 seconds, just long enough for the hair to heat up and set the curl.

Step 5. Remove the rollers and brush the hair
Remove the rollers from the hair by pulling them straight out, horizontally. If you unroll your hair, the curl won't hold as well. Brush through the curls carefully with a flat brush.

Step 6. Spray the curls with some hairspray
This will ensure that the curls hold their shape, even once you put them in a ponytail. Hold the hairspray container about 2 inches (5.1 cm) from the hair and spray along the entire length.

Step 7. Part the hair at the temples
The top section of the hair will form the top of the ponytail. Use a comb and draw a straight horizontal line back just above the temple to the crown of the head. Keep this section of hair away from the rest, and then use a comb to draw a straight horizontal line from the opposite temple so that the comb connects with the hair you have already parted. Then secure the 2 sections into one with a pliers.

Step 8. Brush loose hair into a ponytail
It will be better to use a wide tooth comb as it will not damage the curlers. Brush loose hair up into a ponytail, making sure the sides are taut and smooth. Secure the ponytail at the crown with an elastic.

Step 9. Brush back parted hair
Release the parted hair from the clip and brush it straight back, joining it with the existing ponytail. Then secure everything together with another elastic.

Step 10. Brush the ponytail back
Starting in the middle of the ponytail, brush the hair carefully, moving slowly towards the end of the hair. This will give your hair some extra shape and volume. If you notice any loose hair on the side of your head, straighten it and spray it with a little hairspray.
Method 2 of 3: Wearing straight hair with bangs

Step 1. Wash your hair with shampoo and conditioner
It's best to use a conditioner with a little heat protection. This prevents hair from being damaged by the blow dryer or straightening iron.
Squeeze moisture out of hair after washing. It is not recommended that it be soggy, but it should be damp

Step 2. Apply Moroccan oil to the hair
You only need a small amount (slightly smaller than the size of a dime) for shoulder length hair. Use a little more if your hair is longer. Rub the oil into your hands and then apply it evenly through your hair.

Step 3. Spray hair with heat protectant
Even if you use a conditioner that protects your hair from heat, a heat protectant spray will help keep your hair shiny and healthy. Spray the protector all over your hair, then use your hands to apply and distribute it evenly.

Step 4. Attach the flat attachment to the hair dryer
This accessory will look like a fan and will force the air out of the dryer in a nearly horizontal line. This should make your hair flat, smooth, and shiny.

Step 5. Blow-dry your hair until it is approximately 40% dry
It is not recommended that your hair be completely dry when you are done with this step as you will apply more heat afterwards. Dry it just enough to almost remove all the moisture.

Step 6. Use a flat brush to dry your hair approximately 90%
Brush a section of hair with the flat brush. As you brush from roots to ends, follow with blow dryer. This should be almost touching the hair on the brush.

Step 7. Use a flat iron to straighten your hair
Once your hair is almost completely dry, it should look practically straight. However, to get the completely straight hairstyle that Sandy has in “Grease”, it will be advisable to go over her hair with a straightening iron. Using a 1 inch (2.5 cm) wide straightener, divide your hair into small sections and iron over one slowly, moving from roots to ends.
Your hair shouldn't be completely dry for this step, as using a straightening iron on completely dry hair can damage it

Step 8. Curl the bangs
Once you are done with most of the hair, you will need to curl the bangs. Use a round brush with a small barrel; less than 5 cm (2 inches) wide. Place the brush under the bangs, holding it horizontally. Start at the roots, turning the blow dryer forward toward the ends. Follow the brush with the hair dryer.
If your bangs are dry by the time you go to curl them, re-wet them with a spray bottle of water or a wet comb

Step 9. Brush the hair
Using a flat brush, carefully brush the hair. You should look like Sandy in no time!
Method 3 of 3: Achieve the oiled look

Step 1. Spray hair with some hairspray if it is clean
This will help the hair retain its curls. If you don't use hairspray, the curls could loosen and the hair will end up straight.

Step 2. Divide the hair into at least 6 sections
Begin the sections by creating a neck fence. Use a comb to create a horizontal part near the base of the neck and pile the rest of the hair on top of the head. The loose hair will be where you will start the curls.
The more sections you have in your hair, the more curly it will look

Step 3. Spray each section with thermal spray
Before curling your hair, spray each section with a heat protectant or heat spray to protect it from the heat of the curling iron. Better to spray as you go. If you spray the entire head before curling, parts of the hair will dry out before curling, defeating the purpose of using a spray protector.

Step 4. Curl the hair around the curling iron
A curling iron with a 18mm (0.7in) barrel will create the best size curls for this hairstyle. Starting at the root of the hair closest to the base of the neck, curl the hair around the curling iron. You can roll hair over or under, depending on how it feels most comfortable. Hold the curling iron as vertical as possible. Keep the hair wrapped until you feel it heat up. It should only take 2-3 seconds.
Work from the back of your head to the front

Step 5. Roll the curl flat against the head
Push the curl up to the surface of the head so that it is flat but twisted. Secure it with an alligator clip so it holds its shape while you work through the rest of the hair.
Repeat this process until you have curled all of your hair

Step 6. Loosen the curls
Once you have finished curling and setting the hair, you can remove the clips. Release each curl and let it fall naturally.
If you want curls with a little more volume, leave them in the clips for about 5 minutes after you finish curling your hair

Step 7. Use a comb to comb the roots to add volume
Once the curls have been released, use a comb to tease the hair at the roots. Make sure to only comb from the roots of the hair to the curls.

Step 8. Use your fingers to brush through the curls
Once you've teased your hair, brushing your curls with your fingers helps to separate them a bit without causing them to frizz. Spray the curls with hairspray as you finish brushing them with your fingers.

Step 9. Comb back a small section to the side of the head
As with carded roots, you shouldn't comb the entire length of your hair. Start roughly at the temple on the left or right side of the head and comb straight back, stopping where the curls begin. The hair should lie flat against the head on that side.

Step 10. Insert a comb
Starting about 5 to 6 cm from the roots, insert a comb into the hair, pushing it forward towards the temple.

Step 11. Apply a final spray of hairspray
Once the hair is finished, spray a few more times to set it.