H***y
发帖数: 1134 | 1 我以前很容易长痘，医生给开了Prescription，Pharmacy说要100多刀，insurance
cover这个，只要10美元,它写的是treinoin cream。我查了一下就是A酸。
这个用起来让脸又红又干又褪皮，我从来没让脸这么干过，觉得还不如不用。正好看到
Vouge上有一篇讲Retinol-A的文章，说它是几乎唯一所有皮肤科医生都一致同意的anti
-aging的有效成分，除了防晒。而且它治痘，淡斑，促进胶原蛋白的产生。以前没引起
重视是它的副作用明显，让脸又红又干，又shiny,因为它让细胞更新的太快了。
所以我坚持用了两个月，觉得好像有效果了。好像不那么干了，也许是因为夏天到了？
而且皮肤好像嫩了一些，就是有点新长出来的皮肤的感觉，不知是不是心理作用。我又
让医生给我开了一管，第一次是0.025%,后来是0.05%。有没有人也在用，分享一下经验
？
*以前写的，我用完那个夏天皮肤超好，后来再用它嫩肤效果就没那么明显了，副作用
也没有了，不知是不是该加大计量了，不过我也不容易长痘了，就没有坚持每天用了，
偶尔还会用。
drug store有很多不需要Prescription的Anti-Aging Retinol Cream
ZT
Retinol Cream: Your Skin's New Best Friend
Five reasons you probably don't use a retinoid (and why you should consider
it).
1. You have no idea what a retinoid is. The term describes vitamin A
derivatives that unclog pores, boost collagen to reduce fine lines, and
speed cell turnover to even out discoloration and smooth the skin—sometimes
in as little as four weeks. The first retinoid—tretinoin—was FDA approved
(under the brand name Retin-A) almost 40 years ago as a prescription acne
treatment. Dermatologists soon noticed that patients on Retin-A experienced
not just clearer but softer, brighter, less-lined skin. Today there are
three prescription-strength retinoids: tretinoin (brands include Atralin,
Avita, Retin-A, Retin-A Micro, Renova), tazarotene (Avage, Tazorac), and
adapalene (Differin). Many dermatologists find tazarotene stronger (and
potentially more irritating) than tretinoin; adapalene is the gentlest but
may be less effective.
2. You don't want to go to the dermatologist. While prescription formulas
yield the most impressive results, an over-the-counter retinoid, called
retinol, can also improve lines and discoloration. Because retinol is
gradually converted into retinoic acid (the active ingredient in the
prescription creams) it is less potent. Count on 12 weeks before seeing
results.
3. You think a retinoid will make your skin sun-sensitive. "This is one of
the biggest retinoid myths," says Doris Day, MD, clinical assistant
professor of dermatology at New York University Medical Center (and a
Tazorac user herself). "The ingredient itself is sensitive to sunlight,
which is why you should apply it before bed at night." A retinoid shouldn't
make your skin any more vulnerable to UV rays than it would be after buffing
away dead skin with a face scrub. Summer is actually a good time to start a
retinoid: Humidity makes your skin less likely to dry out as it adjusts. Of
course, apply sunscreen (SPF 30, at least) as diligently as you always do.
4. You're afraid your skin will look worse before it gets better. Retinoids
can cause dryness, redness, and flaking—but if you ease in, you can avoid a
rough transition. For the first two weeks, apply a retinoid every third
night, says Leslie Baumann, MD, director of the Cosmetic Medicine and
Research Institute at the University of Miami (who uses Atralin). If your
skin isn't irritated, ramp up to every other night for two weeks. Not dry or
flaky? Go for it every night. A few other irritation-mitigating guidelines:
Wait 15 minutes after washing your face before you apply a retinoid, and
use one pea-size dab to cover your whole face. After a few minutes, apply a
basic moisturizer to prevent dryness.
5. You think you can't afford it. Insurance coverage of a prescription
retinoid, like Retin-A, varies by plan, and a 20-gram tube will cost about $
75. But generic tretinoin costs about $40—not bad for a product guaranteed
(by decades of science) to work. (For now, only tretinoin is available in a
generic version.) Some drugstore retinol products are even less expensive.
Look for ones with 0.1 percent retinol packaged in aluminum tubes (to
protect the formula from air and light); we like RoC Retinol Correxion Deep
WrinkleNight Cream ($22).
Caveat Emptor •Don't use a retinoid if you are pregnant or
breastfeeding.
•Benzoyl peroxide and alpha hydroxy acids may deactivate retinoids, so
don't layer them.
•Waxing can cause excess redness on retinoid-treated skin; don't use a
retinoid for several days before a treatment.
•A small percentage of people with ultrasensitive skin can never
tolerate a retinoid; if you're one of them, use a gentle physical exfoliator
twice a week to soften your skin, and be extra-conscientious about
sunscreen to prevent collagen loss in the first place. | x********e
发帖数: 35261 | 2 好像有依赖性
anti
了？
我又
经验
【在 H***y 的大作中提到】
: 我以前很容易长痘，医生给开了Prescription，Pharmacy说要100多刀，insurance
: cover这个，只要10美元,它写的是treinoin cream。我查了一下就是A酸。
: 这个用起来让脸又红又干又褪皮，我从来没让脸这么干过，觉得还不如不用。正好看到
: Vouge上有一篇讲Retinol-A的文章，说它是几乎唯一所有皮肤科医生都一致同意的anti
: -aging的有效成分，除了防晒。而且它治痘，淡斑，促进胶原蛋白的产生。以前没引起
: 重视是它的副作用明显，让脸又红又干，又shiny,因为它让细胞更新的太快了。
: 所以我坚持用了两个月，觉得好像有效果了。好像不那么干了，也许是因为夏天到了？
: 而且皮肤好像嫩了一些，就是有点新长出来的皮肤的感觉，不知是不是心理作用。我又
: 让医生给我开了一管，第一次是0.025%,后来是0.05%。有没有人也在用，分享一下经验
: ？
| H***y
发帖数: 1134 | 3 恩，的确有一点
【在 x********e 的大作中提到】
: 好像有依赖性
:
: anti
: 了？
: 我又
: 经验
| d****y
发帖数: 101 | 4 谢谢分享。我以前就在用0.025%的，半年后效果降低了。正准备再找医生看看呢 | x********e
发帖数: 35261 | 5 查了一下，副作用很强 慎用
而且用了会有耐受性，要保持效果必须不断加浓度
【在 H***y 的大作中提到】
: 恩，的确有一点
| H***y
发帖数: 1134 | 6 有耐受性，要保持明显效果必须不断加浓度，我觉得是真的。
不过副作用也会变的不明显。后来偶尔用一次没有开始那么明显的换肤效果，但也许还
是有点效果的吧？
【在 x********e 的大作中提到】
: 查了一下，副作用很强 慎用
: 而且用了会有耐受性，要保持效果必须不断加浓度
| x********e
发帖数: 35261 | 7 你可以去搜一下 维A的副作用可以很严重
【在 H***y 的大作中提到】
: 有耐受性，要保持明显效果必须不断加浓度，我觉得是真的。
: 不过副作用也会变的不明显。后来偶尔用一次没有开始那么明显的换肤效果，但也许还
: 是有点效果的吧？
| H***y
发帖数: 1134 | 8 那可以用0.05%了。。。
【在 d****y 的大作中提到】
: 谢谢分享。我以前就在用0.025%的，半年后效果降低了。正准备再找医生看看呢
| x********e
发帖数: 35261 | 9 http://www.mayoclinic.org/drugs-supplements/vitamin-a/safety/hr
【在 H***y 的大作中提到】
: 有耐受性，要保持明显效果必须不断加浓度，我觉得是真的。
: 不过副作用也会变的不明显。后来偶尔用一次没有开始那么明显的换肤效果，但也许还
: 是有点效果的吧？
| H***y
发帖数: 1134 | | x********e
发帖数: 35261 | 11 一样的道理
【在 H***y 的大作中提到】
: 这个是吃的吧？
| x********e
发帖数: 35261 | 12 http://bbs.tianya.cn/post-funinfo-3755221-1.shtml
外用维a酸的副作用也很大。本来就是很刺激皮肤的东西，用逐渐加浓度的方式可以使皮
肤产生耐受性，但耐受后就不管用了，所以是条不归路。而且本质是让角质变薄的药物
，角质层薄了之后摸着很嫩，但是其实皮肤更加脆弱
【在 H***y 的大作中提到】
: 这个是吃的吧？
|
|
