Well, in skincare, not that I am some major person who sits and works extremely hard in this area, I am just thankful to my genes but nevertheless I think what's absolutely essential is lifestyle and its important not to abuse your body beyond a point because it always reflects itself on your entire being actually, but since we are talking about skincare specifically, here goes...
Ash's Diet I am not saying to be so strict as to not have your occasional junk food or cheat on the kind of indulgent foods what we call comfort food but nevertheless, I think what you put in your body will always reflect on your skin. Hence again find a balance and discipline there as your diet also does reflect on your skin.
Water consumption is extremely important. Consume a certain amount of fresh food, raw foods as in fruits, vegetables, juices. Hydration, I think is something we all need to be consciously aware of in our busy lifestyles. We should hydrate ourselves and I think that's extremely important for our skincare.
Aishwarya's beauty sleep: Sleep which we all constantly are trying to achieve enough of. I think putting in adequate amount of sleep and rest for your body is also essential in skin looking healthy.
Basic Hygiene is extremely, extremely important for skincare. Maintain a good level hygiene. just being clean inside out is extremely important.
The 3-step daily routine Keep your skin clean with the basic facewash, cleansing, toning and moisturising. Know your skin type and the kind of cleanser that you would need. Deep pore cleanser is necessary if you often have breakouts and rashes or extremely oily skin. Find a deep pore cleanser that works. Face wash that works for you skin type along with a toner and moisturizing at the start of the day and the end of the day. I think if you bear all this in mind it should work for you.
See Aishwarya Rai's childhood photos