Hydroquinone, Tretinoin, Oxybenzone
I read something about Oxybenzone being toxic for our reefs.. I think the studies were done in Hawa'ii and Florida, is this true?
Does Titanium Dioxide only address UVB rays?
I just got a prescription for 2% Hydroquinone and 0.025% Tretinoin for the first time.
I was recommended 4% Hydroquinone from my Pharmacist but the Dr. only had one option for Hydroquinone on his computer (a 2% one).. it was from a brand name whose formula I don't like (has alcohol denat/SD alcohol) so instead the pharmacist made a 2% Hydroquinone and 2% Kojic acid compound in a moisturizing thick lotion. Am I wasting my time using 2%? It's coming twds the end of winter in Australia.. how long does 2% normally take compared to 4% to show results?
So far I've only bought the Hydroquinone and am a Beauty student.. We have to do facials on eachother once a week for practise. We're currently using Dermalogica and incorporating the use of machinery (HF and Galvanic etc)
Is it okay for me to be using this Hydroquinone morning and night.. and could I get on the Tretinoin if I only use it once a week?.. I've used Paula's Choice 1% Retinol booster daily with no problems before.. At the moment my regimen is simply cleanse (Aveeno), tone (Paula's Choice), a carrier oil (optional), Hydroquinone, Paula's Choice Resist Retinol serum (0.1%), some nourishing moisturizer and a zinc SPF 30.. I haven't exfoliated/used any product with BHA/AHA in it for about a month at home and relied on the wkly facials for my exfoliation..
The Pharmacist told me to keep the Hydroquinone/Kojic acid in the fridge, do I really need to do that? She compounded it with a moisturizing product called Nourivan I think it's called.
I read Kojic acid is very sensitive to air.. The compound I have is in a white opaque glass bottle with a pump.. is it still effective and will I know when it's off?
Is it simply the Hydroquinone that will turn brown.. or does Kojic acid do this too? Is it worth having Kojic in the mix?..
Can you have Arbutin or Licrorice/Mulberry mixed with Hydroquinone?
Can I apply this all over my face? (avoiding eyelids).. I've got this brown pigmentation on the outer corners of my eyes.. is it okay to apply it there? Why do I have pigmentation on the corners of my eyes??. I've got ephiletes ( a lot UV damage + living in Australia), melasma (possibly from a contraceptive implant/the pill??.. as I've never been pregnant and am 30yrs old) and some brown post inflammatory hyperpigmentation on the corners of my mouth from a coffee burn :S lol..
If I was to only apply the compound on the darker pigmented areas of my face I feel like my already lengthy regimen would take forever.. does it really lighten the 'normal' skin as well? Is it okay to apply it all over my face except for the eyelids?
Also does my skin have to be completely clean slate and dry to apply Hydroquinone or can I apply other product first like a carrier oil/ serum or even moisturizer?
I read one of your articles/podcasts about Hydroquinone and found it very informative (as usual!).. In regards to the pigmentation being either epidermal or dermal depth.. what KINDS of pigmentation tend to be at which level?
Is hormonal pigmentation something usually deeper or epidermal?.. Is sun damage/freckles that have been there forever something Dermal.. or epidermal?..Is topical treatment going to work for epidermal pigmentation?..
Is Hydroquinone really an antioxidant? I read somewhere it's causing oxidation/oxidization to the melanocytes..? Does this means it's also oxidizing healthy cells?
What's the highest % of Hydroquinone safe to use.. do you use it for 3 mnths on n 3 months off.. or 6months on?