TFor the lpast few days, I've been taking more care of my skin, mostand concentrating especially ion my face. For the past few days, I've been taking more care of my skin, and concentrating especially on my face.

The last few days, I've been taking morebetter care of my skin, mostly ion my face. The last few days, I've been taking better care of my skin, mostly on my face.

TIn the last few days, I've been taking morebetter care of my skin, mostly ion my face. In the last few days, I've been taking better care of my skin, mostly on my face.

This sounds more natural

As an ordinary woman, I haveget acne once a month. As an ordinary woman, I get acne once a month.

For diseases, "get" is more commonly used than "have".

As an ordinaryLike most womaen, I have acne about once a month. Like most women, I have acne about once a month.

Just switched it to a bit of a more natural phrase. You'd also want to say "about once a month" unless you're being precise and you only get acne one time a month each month.

So, I've been applying some serums for acne, that exfoliation,e my skin and open my pores. So, I've been applying some serums for acne that exfoliate my skin and open my pores.

Since it's the acne serum that's presumed to also do the exfoliation and the pore opening, this is how you phrase it.

So, I've been applying some serums for acne, exfoliation, and opening pores. So, I've been applying some serums for acne, exfoliation, and opening pores.

I had read on the instructions that I must be soreally careful when I apply them, serum, by avoiding the face's sensitive parts. I had read on the instructions that I must be really careful when I apply the serum, by avoiding the face's sensitive parts.

I had read on the instructions that I must be so careful when I apply them,to avoiding the face's sensitive parts. when I apply them I had read on the instructions that I must be careful to avoid the face's sensitive parts when I apply them

Just a little switch in the order of the words here, again to sound more natural.

I had read on the instructions that I must be sovery careful when I applying them, avoiding the face's sensitive parts. I had read on the instructions that I must be very careful when applying them, avoiding the face's sensitive parts.

I thought that it was a myth, but I alreadyhave just found out that it's not - —in the most horrible way. I thought that it was a myth, but I have just found out that it's not—in the most horrible way.

I thought it was a myth, but I’ve already found out that it's not - in the most horrible way. I thought it was a myth, but I’ve already found out that it's not - in the most horrible way.

One night, I applied one of these serums without being more careful,. I dihadn't noticed that I had also applied a bit of it on my lips edges, and like thisthe edges of my lips, and then I went to sleep just like that. One night, I applied one of these serums without being careful. I hadn't noticed that I had also applied a bit of it on the edges of my lips, and then I went to sleep just like that.

One night, I applied one of these serums without being more careful,. I didn't notice that I also applied a bit of it on my lips edges, and like this I went to sleep like this. One night, I applied one of these serums without being more careful. I didn't notice that I also applied a bit of it on my lips edges, and I went to sleep like this.

I made these into two separate sentences. Also, just changed the order of the words in the second sentence to sound more natural.

One night, I applied one of these serums without being more careful, I didn't notice that I also applied a bit of it on my lips edges, and like this I went to sleep like this. One night, I applied one of these serums without being careful, I didn't notice that I also applied a bit of it on my lips edges, and I went to sleep like this.

Just some sentence structure errors

I woke up with my mouth sofeeling sensitive, with a chemical burn ion all the edges. I woke up with my mouth feeling sensitive, with a chemical burn on all the edges.

When I woke up with, my mouth waso sensitive, withand I had a chemical burn in all the edges. When I woke up, my mouth was sensitive, and I had a chemical burn in all the edges.

Not a necessary correction, just flows a bit more easily.

I woke up with my mouth souper sensitive, with a chemical burn inaround all the edges. I woke up with my mouth super sensitive, with a chemical burn around all the edges.

“In all the edges” sounds odd

Today, what hurts me are this day, the corners of my lips, and b still hurt. Because it's a wemoist area, with movement, it's so difficult to cure still hasn't healed properly. To this day, the corners of my lips still hurt. Because it's a moist area with movement, it still hasn't healed properly.

Today, what hurts me are the corners of my lips hurt, and because it's a wet area, with movemen that moves a lot, it's so difficult to cure. Today, the corners of my lips hurt, and because it's a wet area that moves a lot, it's so difficult to cure.

Today, what hurts me are the corners of my lips hurt, and because it's a wet area, withich movemens a lot, it's so difficult to cursoothe. Today, the corners of my lips hurt, and because it's a wet area, which moves a lot, it's so difficult to soothe.

1. Saying something like “My ___ hurt(s)” is the most common way to say something hurts in English 2. The rest is hard to explain, but I changed it to sound more natural

Now, I boughthave to buy other products for my poor, burned and irritated lips. Now, I have to buy other products for my poor, burned and irritated lips.

I must be sohave be careful with themy skincare stepsregimen, because I have read that's so it's easy to get infected and to havewith fungusi. I have be careful with my skincare regimen, because I have read that it's easy to get infected with fungi.

I must be so careful with the skincare steps because I read that's so easy to get infected and to haveget fungus. I must be so careful with the skincare steps because I read that's so easy to get infected and to get fungus.

I must be sovery careful with the skincare steps because I read that's so easy to get infected and to have fungus. I must be very careful with the skincare steps because I read that's so easy to get infected and to have fungus.

So, iIn summary, the next time, I'll follow the usage instructions exactly to the letter of the productsas written. In summary, the next time, I'll follow the usage instructions exactly as written.

So, in summary, the next time I'll follow the usage instructions exactly to the letter of the products. So, in summary, next time I'll follow the usage instructions exactly to the letter of the products.

I’m not sure “to the letter of” means. Is it an English phrase or a Spanish phrase you directly translated?

If there's a warning, it's there for a reason, and I don't want to to confirm if these areit's true or not. If there's a warning, it's there for a reason, and I don't want to confirm if it's true or not.

If there's a warning, it's for a reason, and I don't want to to confirm if these are reason is true or not. If there's a warning, it's for a reason, and I don't want to to confirm if the reason is true or not.

If there's a warning, it's for a reason, and I don't want to to confirmfind out if thesey are true or not. If there's a warning, it's for a reason, and I don't want to find out if they are true or not.

“To find out” sounds better than “to confirm” in this context