Skincare

Question 1

What is UV light?

Answer 1

Ultra Violet light is a high energy form of light, present in sunlight

Question 2

What happens when UV light breaks bonds?

Answer 2

Free radicals are formed

Question 3

What are free radicals?

Answer 3

Free radicals are atoms/molecules that are highly reactive due to the presence of unpaired electrons

Question 4

Name the 3 steps in chain reaction and explain each of the processes.

Answer 4

Initiation - Starts the reaction by breaking the bond to form two free radicals.

Propagation - Keeps the reaction going, more radicals are formed. 1 free radicals on each side

Termination - Two radicals on reactant side collide to form a stable compound.

Question 5

What are free radical scavengers?

Answer 5

These are molecules that react with free radicals to form stable molecules and prevent chain reactions.

They are also added to food, cosmetics and plastics