I am gonna tell you that how you can use tea tree oil in different ways...this is for both men...

For beard growth

tea tree oil is best for beard growth because it prevents and treats beard dandruff and other issues that keep you from growing a beard. The best way to use tea tree oil is to combine it with other essential oils that stimulate beard growth...... It is the best oil that you can buy for beard growth.

For growth of Hair

tea tree oil helps to unclog hair follicles and Nourish your roots. To use tea tree oil as a hair growth treatment, mix a few drops of tea tree oil with an carrier oil like coconut, jojoba and almond oil. Apply this mixture on your scalp at least once a day for 3 weeks in order to see amazing results.

For acne prone skin

Tea tree oil is a popular choice for treating acne because of its inflammatory and antimicrobial properties. It's thought to calm redness swelling and inflammation. It may help to prevent and reduce acne scars, leaving you with smooth, clear skin.

Mosquito repellent and relief

tea tree oil is best at preventing bug bites as well as treating bites that may have  slipped in. Apply oil directly to affected area for immediate relief. Most insect replicates are highly toxic so tea tree oil provides a highly effective alternative.

Mouthwash

To make your own chemical free mouthwash, simply add a few drop of tea tree oil in a cup of warm water, mix  thoroughly and swish in your mouth for 30 seconds or so. Like other mouthwashes, tea tree oil should not be swallowed. It can be toxic if  ingested...

One should have to use essential oils as they are very important in our life there are many other essential oils also u can also give a try to them.

But note this thing, essential oils always use with Carrier oils as they are highly reactive so that's way u can't apply them directly.

Essential oils is very much effective as compare to other oils as they comes direct from the roots ,flowers ,and stems of the tree everyone should give them a try as it helps us alot.