Hi there! That site doesn't sell ready-made brands/products. They sell the active ingredients for people who make their own products. In this case, I searched for hydrolyzed silk protein and they don't have it, but I'm ordering their VegeKeratin because they say it "Protects hair from harsh salon processes" in addition to increasing hair strength. **ETA: I probably don't need to buy it based on re-reading the thread. Seems like my SAA is good enough, but I'm buying it out of curiosity.
As far as stretching, I've stretched up to 14 weeks before (not on purpose, I was lazy lol). I suffered breakage though, so I started setting my hair appts at exactly 8 weeks. This time, I added about 1/2 capful to my SAA and noticed my new growth was more managable. Lately, I've been acting like that Frank's hot sauce commercial - I've been putting that **** in everything!"
It's amazing stuff. I'm going back to order the large size since the shelf life is a year and I'll keep it in the fridge.
I relax with ORS Normal lye because no-lye broke my hair pretty badly. I've been happy with ORS lye for at least 3 years. I apply Nutress protein conditioner mid-step and DC with ORS Replenishing conditioner. My leave-in is Sally's GVP Silk Remedy (their version of Chi Silk Infusion).
I'm taking stretching week by week. I know for sure it'll be at least another week because I did a henna treatment last week and I like to give it a 2 weeks gap.
Good luck in your journey.