Choose products that will eliminate the frizz and provide protein to smooth out hair shafts.

Garnier Whole Blends Smoothing Oil: This oil is ideal if the ends of your hair are dry, but your scalp tends to get greasy quickly. Because this smoothing serum absorbs into your hair, it leaves no trace of greasiness around your roots. Cantu Super Shine Hair Silk: This serum’s lightweight formula will keep your hair smooth and strengthen it at the same, protecting it from split ends. Nubi Anti-Frizz Hair Serum: If you have a dry or itchy scalp, this serum will moisturize your head as well as your hair—ensuring both remain healthy.

CHI 44 Iron Guard: This protective spray is lightweight; it can protect any type of hair from damage without making the hair greasy and heavy. Joico Thermal Protection Crème: This product helps control frizz and shields your hair from temperatures up to 450 °F (232 °C) all at once. TRESemmé Thermal Creations Protective Spray: This protective spray makes styling your hair easier while also protecting it from heat damage.

Always make sure the hair dryer has a nozzle, cold button, and a strength of 1500 watts.

Keep the flat iron’s temperature between 350 °F (177 °C) and 450 °F (232 °C), and only go over your hair with the flat iron once to avoid damaging it. Flat iron your hair only once every time you wash it and touch up frizzy spots once per wash too. You don’t need to go over your whole head; just apply some heat protectant and fix the problem areas as needed. You can also opt for a professional silk press treatment to straighten your hair at a salon.

Argan oil is rich in vitamin E and fatty acids, which keep your hair sleek and soft. Coconut oil is perfect for hydrating your hair and sealing it, preventing frizz and split ends. Castor oil is also nutrient-rich and promotes hair growth.

You could also try a ponytail or braid if you prefer either style. You only need to keep your hair in the bun while exposed to the humidity. You can always let your hair down if you enter a climate-controlled indoor space. In some areas, mornings are more humid than afternoons. Check your local weather to see if you can let your hair out of the bun in the afternoon.

When you wake up in the morning, simply untie and remove the hair wrap, and your hair will be sleek and straight.

Products without water will keep your straight hair looking great for as long as possible!

If your hair frizzes up a bit during the day, don’t add more heavy product. Instead, rely on your oils and hair wrap to set it straight again.

Other ways to protect your hair from water and humidity include pinning it up on a beach or pool day and using an umbrella during rainy weather. Make sure to wash your hair once a week without the shower cap. Going multiple weeks at a time without washing your hair can strip it of nutrients and dry it out too much.

Sweaty, high-intensity workouts include sprinting, weight-lifting, circuit training, and plyometrics.

Once in place, a keratin treatment can help keep your hair straight for up to 3 months!

Normal relative humidity levels fall between 30% and 50%. [12] X Research source If the humidity level is above 50%, it’ll be more difficult to maintain straight hair. If your country and area have a typical “wet season,” take note and check the daily humidity often during that time.