body wrinkles? [ Edited ]

[#1]

Basically I lose/gain ~20lbs between every summer/winter due to different diet and exercise habits. However, this time when I lost 20lbs, I noticed wrinkles above/below my joints where there were no wrinkles previously. Aside from the fact I should probably keep my weight stable, is there any product that would be anti-wrinkle/firming/toning for the body? Can I use my facial anti-wrinkle/firming serum/moisturizers as spot treatment for those parts too or are they too different and won't be as effective?

My skin also got dryer as I lose weight, possibly coincidence possibly not, but my diet has been pretty healthy with some veggies, some meat, some fruit and water + coconut water. *sigh* sometimes I think I have the weirdest problems.

[#2]

I'm not sure how effective the Bliss line is but they have a lot of creams for this issue among others.  caffiene is an ingredient that is supposed to help.  Also, Dermadoctor has products that help the problem you,describe, but again I'm not sure if they work.  Sometimes these products work while you use them, but when you stop, you're back to the original condition.  

[#3]

I heard a lot of good results about perricone md cold plasma body for body wrinkles. In my personal experience, I like the Belli body firming serum or oil for elasticity. I know it is meant for those pregnant women but it was recommended to me when I was trying drastic diet. I think oil works better and retains more moisture for the body than lotion products so it is great for dry skin. As for using face product for the body...I tried using ddf glycolic moisturizer (meant for the face right?) on my body coz I love how it worked on my face but I didn't see the same result plus it really hurt my wallet . 

[#4]

Look for products with caffeine that can help with reducing puffiness in the skin and also promote water drainage. It's often an ingredient used in products to depuff eyes because it restricts/constricts blood vessles to where areas can "calm down".

Caffeine will also temporary allow for tightening/toning effects. Bliss has lots of products in their Fat Girl Slim body line with caffeine you can look into.

Also, try looking into local spas for body wraps which work in the same aspect and can help with giving a more toned/slim look to the figure and tighten everything.

Try looking for lotions with peptides, which also help to firm and decrease the appearance of wrinkles. Peptides help to fill in the gaps and plump up skin so wrinkles are less aparent.

[#5]

Rodial makes some amazing body  firming products and also phytomer makes body firming products as well. Sephora doesn't carry them but you can research for your self at essential dermacare.com.