How does sun in work

If you have virgin hair hair that has never been touched by color, bleach or any other chemical , it could lift to a pretty neutral brown or dark blonde, but results will vary. Dark hair can be lightened to a pretty brown color, but oftentimes dark hair pulls unnaturally warm, so you will want to do a test strand to examine the results and see if you like the final color.

Sun in works best on those with meidum blone to bright blonde hair if blonde results are desired. If you just said DUH and were going to continue scrolling down to the next question, stop! It may come to a surprise to many, including myself, but technically Sun In is made to be used with a blow dryer but can be used in the sun. Overall it will work best with a blow dryer, but obviously you can use it with the sun outside.

It is going to depend on the results you want and, more importantly, how fast you want to see results. This is now the point in which you are scratching your head and wondering what the heck? You want to actually use Sun in on damp hair! You can have it damp from it being fresh out of the shower, throw your head under the sink or spray it down with a spray bottle. Spray the product onto damp hair and comb through to disburse it evenly.

You can also take your fingers and massage it in. Make sure to use a wet comb or a detangling comb. Using the wrong type of comb or brush on wet hair will cause damage to your hair. This is an overall rule of thumb, not just when using Sun in. I personally love this one and it has over 8, revies and comes in a wide range of colors.

This can work on wet or damp hair. Once you have the product combed throughout the hair, you will want to use a blow dryer to activate it with direct heat, which will give you the fastest and best results. The reason why this method is suggested and will give you the best results is that the blow dryer provides direct heat onto your hair shaft. This helps lift the layers the hair shaft is made of and thus allows the Sun in to penetrate into the layers and change the hair color.

If you are looking for a more casual relaxed way to change the color spray it in and sit your little butt outside. Because the actual real sun is so far away, it will have a harder time penetrating the hair to change the color. Another factor to consider if you want to go the natural route is the location in which you live.

If you live in or close to a bigger city, then pollution will come into play because it blocks sun rays and the intensity in which you feel the sun, thus interfering with the color change.

It is the same reason you get burnt on vacation vs. View on YouTube. The great thing about Sun In is that you can always apply more to go blonder! Of course, the easiest play to buy Sun In is from Amazon!

Buy Sun In on Amazon. Same for Walgreens and Walmart. So you may not see it in all stores. Rather, it is found in the NEXT aisle over next to the hair color dyes and the temporary color dyes like colorful purple or pink hair chalk.

Sun In contains hydrogen peroxide and lemon juice to lighten hair. Both Sun In and the John Frieda lightening spray work and are good! Maybe I should do a review though! They are exactly the same formula. Just different scents! One is lemon fresh and one is tropical breeze. Instead, the sun is a gigantic nuclear reactor. The sun is a star, just like the other stars we see at night. The difference is distance -- the other stars we see are light-years away, while our sun is only about 8 light minutes away -- many thousands of times closer.

The sun is composed of gas. It has no solid surface. However, it still has a defined structure. The three major structural areas of the sun are shown in the upper half of Figure 1. They include:. Above the surface of the sun is its atmosphere, which consists of three parts, shown in the lower half of Figure 1 :. The core starts from the center and extends outward to encompass 25 percent of the sun's radius.

Its temperature is greater than 15 million degrees Kelvin [source: Montana ]. At the core, gravity pulls all of the mass inward and creates an intense pressure. The pressure is high enough to force atoms of hydrogen to come together in nuclear fusion reactions -- something we try to emulate here on Earth. Two atoms of hydrogen are combined to create helium-4 and energy in several steps:.

These reactions account for 85 percent of the sun's energy. The remaining 15 percent comes from the following reactions:.

The energy is emitted in various forms of light: ultraviolet light, X-rays , visible light, infrared, microwaves and radio waves. The sun also emits energized particles neutrinos, protons that make up the solar wind. This energy strikes Earth, where it warms the planet, drives our weather and provides energy for life.

We aren't harmed by most of the radiation or solar wind because the Earth's atmosphere protects us. After covering the core, it's time to extend outward in the sun's structure. Next up are the radiative and convective zones.

The radiative zone extends outward from the core, accounting for 45 percent of the sun's radius. In this zone, the energy from the core is carried outward by photons, or light units.

As one photon is made, it travels about 1 micron 1 millionth of a meter before being absorbed by a gas molecule. Upon absorption, the gas molecule is heated and re-emits another photon of the same wavelength. The re-emitted photon travels another micron before being absorbed by another gas molecule and the cycle repeats itself; each interaction between photon and gas molecule takes time.

Approximately 10 25 absorptions and re-emissions take place in this zone before a photon reaches the surface, so there is a significant time delay between a photon made in the core and one that reaches the surface. The convective zone , which is the final 30 percent of the sun's radius, is dominated by convection currents that carry the energy outward to the surface.

These convection currents are rising movements of hot gas next to falling movements of cool gas, and it looks kind of like glitter in a simmering pot of water. The convection currents carry photons outward to the surface faster than the radiative transfer that occurs in the core and radiative zone. With so many interactions occurring between photons and gas molecules in the radiative and convection zones, it takes a photon approximately , to , years to reach the surface.

We've finally made our way to the surface. Let's trace through the atmosphere next. Just like Earth , the sun boasts an atmosphere. However, the sun's is composed of the photosphere, the chromosphere and the corona. The photosphere is the lowest region of the sun's atmosphere and is the region that we can see. It is miles kilometers wide and has an average temperature of 5, degrees Kelvin. It appears granulated or bubbly, much like the surface of a simmering pot of water.

The bumps are the upper surfaces of the convection current cells beneath; each granulation can be miles 1, kilometers wide. As we pass up through the photosphere, the temperature drops and the gases, because they are cooler, do not emit as much light energy. This makes them less opaque to the human eye.

Will I go even lighter — to blonde — in the future? It was difficult to make out the difference in most indoor photos I took hence why it took so long to get this post updated! Sun-In managed to lighten the bottom half of my hair by about shades, taking it from a dark ashy brown to a warm medium chestnut. But in any case, this stuff definitely works! The one downside though? Below is a photo taken indoors, hence why the shade difference looks a bit more subtle.

Ignore the half-asleep look on my face!