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Lifespan of brand new sealed blades?

You see, My beard grows at a slow rate. I only shave 2 times a week, and I do that only on even weeks because my GF likes me with a beard... so I had to make a deal with her. I keep the beard 1 week and then I shave the next (and so on)

Anyways, I have 4 razors:
GEM (Still have 4 blades)
Shaving Factory Shavette (97 blades)
Mekur HD (90+ blades)
JCB Razor (19 feather blades)

So, as you can see, I have enough blades for a LONG time.
I keep 'em (the razors and the blades) at my room, that way I will not expose them to moisture. The thing is, I made my numbers. A year has 54 weeks. I shave only on even weeks, but I shave twice. That means I shave 54 times a year, I get this many shaves per blade,:

Feather SE Blades: Expect 10 from each blade from reports I've read on the internet (I've shaved twice so far)
Derby DE: 4 shaves
Derby SE for the shavette: 3 shaves
GEM Blade: 4-5, lets round it to 5 because the blades are or great quality.

That gives me (Rounded) 198+360+290+20 = a lot... but to be more precise: 868. That's 16 years of shaves hahaha. I now realize my mistake was to buy blades thinking I would only use *that kind of blade only* and bought a big number. Anyways, just as the title of the thread says: What's the lifespan of a brand new sealed blade?

I tried to make my dad and brother to use DE razors but they seem a bit reluctant. Dad says the doctor told him to use only Gillette Sensor Excell because any other razor would irritate his skin :mellow: I don't think it's the razor but the products he used that caused the irritation: Crappy disposable blades and (quotic Mantic) Canned goo. My reasoning behind ths is that when I gave him as a gift a shaving brush + omega soap, he said he felt the saves were smoother... but you know dads, stubborn till the end :lol:.

My brother, on the other hand, says he doesn't have time to shave the classic way... and he doesn't seem to have the same passion anyways. I gave him the same gift I gave my dad and whenever I visit him and ask him to lend me his bathroom, I find the items with clear signs of disuse (lots of dust) My father MIGHT use it if I buy a nice DE for him (he liked the Omega shaving soap and brush) but I don't want' to buy him the gear and the find out the razor is under a bunch of things at his bathroom, the brush full of dust. (Of course, I could grab them and give 'em a good use, but I know my dad and he would feel guilty for not using them)

My friends all have a myriad of excuses
- "My skin is too sensitive" (or "I'm a sissy")
- "I like my throat" (or "I'm a sissy")
- "Nothing beats my <electric razor>" (or "I hate shaving and no matter what, I will still hate it and I don't want to try aything new")
- "Too much of a hassle" (or "I'm a lazy bum")

I imagine it is reasonable that I will have to buy (say) the DE blades again somewhere within the next 4 years, it's a shame because it makes me feel a littledumb to have bought so many blades without really thinking how mamy I would really need and I have accepted I will have to simply discard a big batch of blades but the question remains:

What's the estimated lifespan before even a new sealed blade becomes dangerous?

P.D.
Sorry for the LONG post... darn, most of my post are quite lengthy :blushing:
 
The lifespan of a new,sealed blade will depend solely on conditions of storage. For maximum life, store in a container with a tight fitting screw top.A bag of
"rechargeable" desiccant should be added,and occasionally recharged for the best storage.Charging the bag consists of several hours in hot sun,or a few hours in warm oven.Same principles as gun storage,although there are electronic devices available as well.
 
Last week I was shaving with NOS Perma Sharp blades made in Scotland over 40 years ago, and they are probably the best blade I have ever used.
 
@maloccio
Oh yes, I can store them in better containers with some desiccant!
I've heard dry rice is a nice moisture absorbent. I will try that :)

@elverdiblanco
40 Years! That blade was older than me! You are my hero :D
 
I've used vintage Schick Plus Platinum blades, of unknown age, from an open pack that was in with a Lady Gillette razor that I found at an antique store, and it was still fantastic.

Coated stainless steel DE blades, sealed in the package, will be good for a very long time, even without much special storage treatment.
 
Here in NC, we only have 52 weeks in a year. Don't worry. We're used to it. Most places have more than we do ...

Same here in Texas. However, it all suddenly makes sense now. I always hear about how people in other countries have 4-6 weeks of vacation per year. Now I understand where my missing vacation has been. People in other countries have an additional 2 weeks per year.
 
( .___.)

damn, I meant 52 weeks... So embarrassed, but I must say you made me laugh guys haha
 
My thin Gillettes (date code of the early fifties) perform just fine. Neither I nor my grandfather ever bothered about storage. These blades never have seen other places than well ventilated bathrooms, and never were kept in a plastic bag or box.
 
Unless you drown them, most modern packaged blades should last well beyond your lifespan, even if you are 20, and live to be 100.... There isn't much to go wrong with them, even in normal storage...
 
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