In this post you will find answers to all these questions. :)
Is Cleansing Essential?
Yes it is essential, cleansing gives you loads of benefits, it is the most commonly used method to keep skin healthy and radiant. Make-up, pollution, oil, dirt all fill up our pores and cause dullness, pimples, blackheads, whiteheads, roughness, aging etc, washing your face can not remove all these from the deepest pores, no matter how dirty your skin becomes it need cleaning and moisturizing as well. Cleansing is one solution for all these.
Cleansing removes all dirt etc gently and does not harm your skin, it removes the excess oil and all impurities from within so doesn't let pimples pop up. When the skin is clean you are free from blackheads and whiteheads. Along with this, it makes your skin healthy and vibrant, it looks fresh even without make-up and glows with make-up unlike dull skin. With proper routine you will start feeling a glow in your skin.
If you feel cleansing is making your skin dry then you perhaps are using wrong product that is not suitable for your skin type its drying your skin out if it is not the reason then a solution to this dryness is using toner according to your skin type after cleansing, it moisturizes and soothes your skins.
For What Skin Types?
It is for all skin types, all skin types need proper care to glow and stay fresh.
In Which Seasons?
In all seasons, in dry seasons if your skin feels dry after cleansing then change the routine from twice a day to once a day. In summers make sure you cleanse your skin after coming back home from school, college, work etc.
How to do it?
Its very easy take a good amount in your hand palm.
Which Products to Choose from?
Honestly I don't want to bound you with my likes, plenty of very good products are available in market almost all companies have their cleansing milks, but what i can help you with is for oily/combination skin or acne prone skin Neutrogena (deep clean cleansing lotion) and Clean & Clear give best results. For normal skin you can pick from Loreal skin perfect cleansing and perfection milk, Nivea daily essential sensitive cleansing milk, Ponds white beauty cleansing milk and many more. I have oily so I use Neutrogena.
Just don't buy cheap local products they contain harmful chemicals they might make your skin fairer temporarily but they damage cells, always buy beauty products from renown companies, read the expiry dates, and buy according your skin type.
How Many Times?
For Oily/Combination Skin: Twice a day, everyday is recommended.
For Dry Skin: Once, everyday is enough.
Stay Healthy, Stay Beautiful, Stay Trendy.