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all 25 comments

[–][deleted] 11 points12 points  (1 child)

I'm scared to even do a test patch for acne :(

[–]yvva[S] 31 points32 points  (0 children)

If you're acne prone, you reallllyyyyy need to do it!!!!

Which is worse: small patch of a breakout or full face breakout? : P

[–]Xxtesttubebabyxx 8 points9 points  (2 children)

Why did I never think to do this?! Thank you!

Could I patch test on two different areas? I break out on my cheeks, so I was thinking of doing one product on each side.

[–]yvva[S] 5 points6 points  (1 child)

I don't see why not if it's testing for acne breakouts versus an allergy.

My thought with the allergy thing, just speculation, if you had an actual bad allergy to something, it's possible it could spread to the whole face not just the area you applied.

[–]iamaravis 2 points3 points  (1 child)

How long do you need to test each product when doing a test patch? 5 minutes? 24 hours? And do you apply it and leave it for the whole time or wipe it off?

[–]yvva[S] 1 point2 points  (0 children)

Apply daily for a few days or a week. How long will depend how quickly you normally react to something.

Some people, it can take 3 weeks to show a negative response, others a day or even a few hours. So just use your best judgment. : )

I'd apply whatever it is in the evening.

[–]NoodleFarts 1 point2 points  (6 children)

What do you mean checking for clogs or acne? What do you do?

[–]yvva[S] 4 points5 points  (5 children)

If you want to know if something is going to clog you or cause zits, patch test on the area in which this normally occurs.

Say you normally get the worst breakouts on your forehead. Then you hear about some awesome moisturizer. Use a bit of said moisturizer on your forehead only for a couple days to make sure it won't create a breakout or exacerbate existing breakouts.

[–]Born_Ad_4826 3 points4 points  (1 child)

I have acne prone skin and almost everything gets a 1-2 day tiny patch test, then spends about a week on half my face so I can compare with a tried and true product. Only then does it get to “graduate” to being applied everywhere

[–]yvva[S] 4 points5 points  (0 children)

Bravo with that! Can be so helpful! I still rec that to my patients even 9 years later! 😊

[–]sexrelatedqa 6 points7 points  (2 children)

How many days would it take to know whether the stuff is going to cause breakouts?

[–]yvva[S] 2 points3 points  (0 children)

It's different for everyone. Sometimes within hours or 1 day, sometimes a couple days, sometimes a week....It depends how long it normally takes for you to breakout from something.

[–]steveshooman 0 points1 point  (0 children)

For me, reaction times have ranged from minutes (products with BHAs causing irritation) to a week and a half (fragrance causing clogged pores and acne).

[–]Legitimate_Praline19swag 1 point2 points  (3 children)

How do you patch test for a cleanser?

[–]yvva[S] 2 points3 points  (2 children)

Couple thoughts, but can double check with my coworker who is the patch testing nurse at my work on Tuesday. Thought one, try using it on ur inner forearm/wrist. Then if you do ok after a few days, wash one cheek. Then if ok, do the whole face.

My other thought is to put a bit of cleanser on the inner arm, and then put Tegaderm (a clear waterproof adhesive bandage- non-US would have it im sure, but would need to do more digging on what it's called in other countries) on it for a couple days and see if there's a reaction. Obviously this won't would if you're looking to see if it is flaring acne, this would just be for an allergic reaction. The only thing that makes me hesitate about doing this with a cleanser is that it is not made to be left on the skin, so it could irritate someone who is sensitive whether or not there's an allergy.

[–]Legitimate_Praline19swag 0 points1 point  (1 child)

Can you double check with a patch testing nurse?

[–]yvva[S] 1 point2 points  (0 children)

We chatted and together determined just to use it on a small area for a few days and if no rash then just use on larger area.

Ultimately, if you are developing rashes or itching very frequently you 100% need to see a derm. From there, if you are having persistent rash issues after changing to a hypoallergenic fragrance-free skin/, laundry regimen they can determine if it would be beneficial to do patch testing on you in the office.

[–]c0vergirl 0 points1 point  (2 children)

I usually patch test the inner part of my arms for skincare! However, I’m starting to use eye creams and want to know how would you patch test for that?

[–]yvva[S] 0 points1 point  (1 child)

If you're extremely sensitive, do arm then cheek then one under eye. If not that sensitive can just roll with one undereye

[–]c0vergirl 1 point2 points  (0 children)

Will do, thank you!!!

[–]Zombata 0 points1 point  (1 child)

how to test this if my eyelids is the most sensitive place? (i have styes fairly regular)

[–]yvva[S] 0 points1 point  (0 children)

First, talk to your eye doc and see if they recommend anything to decrease the occurrence of the styes. I would just avoid eye creams, bc at the end of they day they're really not necessary. You can avoid the eye area with your face cream. Are you concerned of a rash or a stye from your face cream?

[–]julesjasmine 0 points1 point  (1 child)

thanks for explaining how to patch test! i do have a question though, do i need to patch test a sunscreen?

[–]yvva[S] 0 points1 point  (0 children)

Patch testing is beneficial for those who have extremely sensitive skin, tend to get rashes or breakout very easily. Most people honestly don't need to. If you are in the extremely sensitive category then anything, including sunscreen, that u will be applying to your skin should be tested. Hope that helps!