Guess me : I am covered with milky soft coat & When my head glows red, I slowly sink into a white bed, Never to......

Question

I am covered with milky soft coat &

When my head glows red,

I slowly sink into a white bed,

Never to stand again.

Who Am I?

Answer 1

It could be a CANDLE.

Answer 2

Could it be a burnt log in a fire? Because after its burnt it glows red like an ember, and the ash from the rest of the fire piles up around it, essentially making it 'sink' into a white bed. And it was once a tree that stood, but now that its burnt it will never stand again. Lastly, when you burn wood it gets a 'milky soft' covering of ash.

There's probably a simpler answer but ^that kinda satisfies the criteria too... Kinda :P