rstly, no-lye relaxers are best for 'do-it-yourselfers' and is recommended for people with fine hair, children, those with sensitive scalp, and for those who prefer straighter relaxed hair.
They are easier on the scalp (has a lower pH than a lye relaxer) and harder on the hair because they leave mineral deposits on the hair that make it less able to absorb moisture. Bear in mind that hard water can also leave high levels of mineral deposits on the hair shaft. This is where chelating shampoos come in - formulated to remove these harsh mineral deposits left on the hair by a relaxer or hard water.
What can you do?
1) First, protect your hair by covering the already existing processed hair with either conditioner or oil prior to relaxing. This will reduce bond breakage, and prevent minerals from depositing easily along the hair shaft. Profectiv's Break Free is great for this step as well. It is highly recommended to carefully follow the manufacturer's timing instructions to prevent over-processing even if you not experiencing any burning.
2) Following the relaxer, use a chelating/neutralizing shampoo to lift any minerals that may have been deposited along the cuticle to reduce dryness - Kenra Clarifying Shampoo, Nexxus Aloe Rid, Mizani Phormula 7, or Joico Resolve are great to try. Chelating removes the buildup that leads to relaxer dryness so they remain soft and receptive of moisture treatment.
3) Select a quality relaxer brand eg., Mizani and Affirm. If you choose a the no-lye relaxer route, invest in a trusted, professional relaxer brand that is preferably either lithium or potassium hydroxide based to avoid mineral buildup.
Secondly, lye relaxers are the preferred formula of the salon industry. As far as which one is better, the truth is that any relaxer is only as good as the person applying it and the person maintaining it afterwards. Lye relaxers are harder on the scalp (the pH of lye relaxers can exceed 13 on a 1-14 scale) and easier on the hair (they don't leave dulling deposits on the hair shaft, and therefore do not interfere with the hair's ability to absorb moisture.
They do not straighten the hair as completely as no-lye relaxers. They process faster than no-lye relaxers and therefore must be applied quickly to avoid damage to the hair fibre. This is why it is better for a highly trained professional stlyist to apply a lye relaxer.
What can you do?
1) Avoid damage from these relaxers by basing your scalp well prior to relaxing, using a thick layer of petroleum base to the scalp and sensitive areas around the neck, ears and face.
2) To counteract the cuticle lifting and swelling damage from lye relaxing, protein conditioning should take place immediately after removing the relaxer but before a neutralizing shampoo is used. This helps to rebuild the cuticle and return the scales to their normal orientation. This step can also be done with no-lye relaxer systems.
Both lye and no-lye relaxers have downsides. Remember, the one that is easier on the scalp can still damage the hair and the one that is easier on the hair can still damage the scalp. You can end up bald and chemically burned with both types. Relaxers by their very nature damage both hair and scalp if they come in contact with it. Lye or no-lye, chemicals are chemicals - and if something goes wrong with either one, permanent hair and scalp damage can occur and they both solvable issues.
Thanks to Sistaslick, the above information was found on http://www.associatedcontent.com - www.associatedcontent.com , written by her. I've put a lot of her hair guidelines into practice, and I gatta tell ya, she knows what she's talkin' about.
Bahama mama, "Enjoyed my stay, but He'll take me away like a thief in the night."